Photo: Sheila1988 · CC BY-SA 4.015 candidates stood for 5 seats in Lucan, one of the most contested ballots at the 2024 local elections
Esker spans more than one of the local electoral areas: 69% of its residents vote in Lucan, most of the rest in Palmerstown-Fonthill. There is just one council for Esker, South Dublin County Council: Ireland has only one tier of local government. The Lucan local electoral area elected 5 councillors in June 2024: Independent 2, Fine Gael 2 and Labour Party 1. No party holds a majority on South Dublin County; Independent has the most seats, 10 of 40, short of the 21 a majority needs. In the Dáil, Dublin Mid-West has 5 members: Sinn Féin 2, Fine Gael 1, Independent 1 and Fianna Fáil 1.
Esker’s council and votes, in 4 figures
A crowded ballot
15 candidates stood for 5 seats in Lucan in June 2024, the 8th-most contested ballot of 166 by candidates per seat. Local elections ↓
Low turnout
47,930 of Dublin Mid-West’s 85,769 registered voters turned out in November 2024, 56%: the 6th-lowest of 43 Dáil constituencies (all of them: 60%). Dáil Éireann ↓
No majority on South Dublin County
Independent won the most seats on South Dublin County Council in June 2024, 10 of 40, short of the 21 a majority needs; it ran 25 candidates. No party holds a majority on any of the 31 councils, so each council’s business is carried by votes across parties. Who’s in charge ↓
Low turnout
11,673 of Lucan’s 25,920 registered voters turned out in June 2024, 45%: the 38th-lowest of 166 local electoral areas (all of them: 49%). How Esker voted ↓
Written from the data on this page: the 2024 count sheets of the Department of Housing, Local Government and Heritage and the Oireachtas members list.
No party holds a majority on South Dublin County Council
Seats on South Dublin County Council as elected in June 2024, with each party’s candidates, and the other councils beside it.
- Independent1025 stood
- Fine Gael913 stood
- Fianna Fáil511 stood
- Sinn Féin521 stood
- People Before Profit–Solidarity49 stood
- Labour Party35 stood
- Social Democrats25 stood
- Independent Ireland11 stood
- Irish Freedom Party11 stood
As elected on 7 June 2024.
A party needs 21 of the 40 seats to outvote the rest. None has that: Independent is largest with 10. None of the 31 councils has a single-party majority. Fine Gael is second with 9 seats. The councillors elect a cathaoirleach each June to chair the council for a year; no open national list names them.
The 31 councils of Ireland
Seats by party as elected, largest party named; this council first.
Local and general election results 2024: Department of Housing, Local Government and Heritage (CC BY-SA 4.0); areas matched to towns by TownRatings from Tailte Éireann boundaries and CSO Census 2022 Small Areas (CC BY 4.0).
One council, and the government for the rest
Esker has no town or county council of its own: Ireland has 31 councils, each the only council for its area.
Housing and homelessness, planning, local and regional roads, parks and libraries, the fire service, bins enforcement and street cleaning, the register of electors, and the Local Property Tax rate it may vary.
sdcc.ie ↗Schools (Department of Education), health (the HSE), national roads (TII), policing (An Garda Síochána) and the Local Property Tax itself (Revenue).
gov.ie ↗Uisce Éireann runs water and sewers; private operators collect most bins under the council’s rules.
Who to ask
Green: the council. Gold: a government department or one of its agencies. Grey: another public body.
From the council to the Dáil
Every elected tier that speaks for Esker, from the most recent elections.
- 12 local electoral areas2 local electoral areas · 10 councillorsIndependent 3 · Fine Gael 2 · Labour Party 1 · Fianna Fáil 1 · Irish Freedom Party 1 · Sinn Féin 1 · People Before Profit–Solidarity 1
- 2South Dublin County Council40 councillors from 7 local electoral areasIndependent 10 · Fine Gael 9 · Fianna Fáil 5 · Sinn Féin 5 · People Before Profit–Solidarity 4 · Labour Party 3 · Social Democrats 2 · Independent Ireland 1 · Irish Freedom Party 1
- 3Dáil ÉireannDublin Mid-West · 5 members
Party colours are neutral on purpose: they tell parties apart and aren’t the parties’ own. TDs: Houses of the Oireachtas Open Data (Oireachtas PSI Licence, CC BY 4.0).
10 councillors for Esker’s 2 local electoral areas
Each of the local electoral areas where 5% or more of the town’s residents live: who was elected, and who else stood.
- Paul Nicholas Gogarty
- Vicki Casserly
- Liona O'Toole
- Caroline Brady
- Joanna Tuffy
Also stood (10): Derren Ó Bradaigh (Sinn Féin), Jithin Ram (Green Party), Kamal Shah (Independent), Stephen Nolan (Social Democrats), Mark Kerins (People Before Profit–Solidarity), Robert Coyle (The Irish People), Frank Conway (Fianna Fáil), JOSEPH ROy Kunjalakatu (Independent), Lorraine Dwyer (Sinn Féin), Eben Agbana (Independent).
- Shane Moynihan
- Alan Hayes
- Glen Moore
- Niamh Fennel
- Madeleine Johansson
Also stood (12): Paul Nicholas Gogarty (Independent), Daniel Loftus (Sinn Féin), Colm Quinn (Aontú), Emma Griffin (Fine Gael), David Gardiner (The Workers' Party), Ruth Nolan (Sinn Féin), Cathal Ó Murchú (Sinn Féin), Sikandar Jahanzab (Fine Gael), Karla Doran (Green Party), Gavin Callaghan (Independent), Shane Fitzgerald (Independent), Funmi Soyemi Olatunji (Labour Party).
Esker’s councillors, one by one
| Councillor | Party | Area | First preferences | Result | Returning or new |
|---|---|---|---|---|---|
| Paul Nicholas Gogarty | Independent | Lucan | 2,671 | Elected at count 1, on the quota | Re-elected |
| Vicki Casserly | Fine Gael | Lucan | 1,574 | Elected at count 8, on the quota | Re-elected |
| Liona O'Toole | Independent | Lucan | 1,231 | Elected at count 12, on the quota | Re-elected |
| Caroline Brady | Fine Gael | Lucan | 1,199 | Elected at the last count, below the quota | New |
| Joanna Tuffy | Labour Party | Lucan | 890 | Elected at the last count, below the quota | Re-elected |
| Shane Moynihan | Fianna Fáil | Palmerstown-Fonthill | 1,348 | Elected at count 10, on the quota | Re-elected |
| Alan Hayes | Independent | Palmerstown-Fonthill | 1,335 | Elected at count 12, on the quota | Re-elected |
| Glen Moore | Irish Freedom Party | Palmerstown-Fonthill | 964 | Elected at the last count, below the quota | New |
| Niamh Fennel | Sinn Féin | Palmerstown-Fonthill | 848 | Elected at count 14, on the quota | New |
| Madeleine Johansson | People Before Profit–Solidarity | Palmerstown-Fonthill | 762 | Elected at the last count, below the quota | Re-elected |
7 of the 10 were sitting councillors who were re-elected; 3 weren’t on the council before the election.
Seats by party in each of South Dublin County Council’s 7 local electoral areas
Every area of South Dublin County Council: seats, candidates and turnout
| Area | Seats | Candidates | Electorate | Turnout | Quota |
|---|---|---|---|---|---|
| Lucan | 5 | 15 | 25,920 | 45% | 1,926 |
| Palmerstown-Fonthill | 5 | 17 | 26,182 | 37.8% | 1,616 |
| Clondalkin | 7 | 20 | 32,221 | 40.6% | 1,601 |
| Firhouse-Bohernabreena | 5 | 11 | 27,225 | 40.8% | 1,834 |
| Rathfarnham-Templeogue | 7 | 16 | 41,440 | 46.9% | 2,406 |
| Tallaght-Central | 6 | 18 | 30,256 | 42.6% | 1,806 |
| Tallaght-South | 5 | 14 | 24,505 | 31.5% | 1,257 |
Each of the local electoral areas elects 3 to 7 councillors by single transferable vote: voters number the candidates in order, a candidate who reaches the quota is elected, and spare votes and those of the lowest candidate pass to the next preference. A councillor who leaves is replaced by co-option, usually from the same party, so the names can change without an election.
Councillors: same source as Who’s in charge, above.
Women hold 19 of the 40 seats on South Dublin County Council
Everyone elected to South Dublin County Council across its 7 local electoral areas in June 2024, by party: how many are women and how many sat on the council before.
| Party | Seats | Women | Re-elected | First preferences |
|---|---|---|---|---|
| Independent | 10 | 1 | 10 | 25.7% |
| Fine Gael | 9 | 5 | 6 | 17.6% |
| Fianna Fáil | 5 | 3 | 5 | 13.6% |
| Sinn Féin | 5 | 4 | 2 | 12.9% |
| People Before Profit–Solidarity | 4 | 3 | 1 | 6.7% |
| Labour Party | 3 | 2 | 2 | 7.8% |
| Social Democrats | 2 | 0 | 2 | 4.3% |
| Irish Freedom Party | 1 | 0 | 0 | 1.1% |
| Independent Ireland | 1 | 1 | 0 | 1.2% |
19 of the 40 councillors are women, 48%; across all 31 councils the share is 26%. 28 sat on the council before the election and 12 are new to it.
Every member of South Dublin County Council
| Councillor | Party | Area | Returning or new |
|---|---|---|---|
| Francis Timmons | Independent | Clondalkin | Re-elected |
| Darragh Adelaide | People Before Profit–Solidarity | Clondalkin | New |
| Trevor Gilligan | Fianna Fáil | Clondalkin | Re-elected |
| Shirley O'Hara | Fine Gael | Clondalkin | Re-elected |
| Linda Decourcy | Independent Ireland | Clondalkin | New |
| William Carey | Sinn Féin | Clondalkin | Re-elected |
| Eoin Ó Broin | Social Democrats | Clondalkin | Re-elected |
| Alan Edge | Independent | Firhouse-Bohernabreena | Re-elected |
| Brian Lawlor | Fine Gael | Firhouse-Bohernabreena | Re-elected |
| Emma Murphy | Fianna Fáil | Firhouse-Bohernabreena | Re-elected |
| Sarah Barnes | Fine Gael | Firhouse-Bohernabreena | New |
| Róisín Mannion | Sinn Féin | Firhouse-Bohernabreena | New |
| Paul Nicholas Gogarty | Independent | Lucan | Re-elected |
| Vicki Casserly | Fine Gael | Lucan | Re-elected |
| Liona O'Toole | Independent | Lucan | Re-elected |
| Caroline Brady | Fine Gael | Lucan | New |
| Joanna Tuffy | Labour Party | Lucan | Re-elected |
| Shane Moynihan | Fianna Fáil | Palmerstown-Fonthill | Re-elected |
| Alan Hayes | Independent | Palmerstown-Fonthill | Re-elected |
| Glen Moore | Irish Freedom Party | Palmerstown-Fonthill | New |
| Niamh Fennel | Sinn Féin | Palmerstown-Fonthill | New |
| Madeleine Johansson | People Before Profit–Solidarity | Palmerstown-Fonthill | Re-elected |
| Pamela Kearns | Labour Party | Rathfarnham-Templeogue | Re-elected |
| Ronan McMahon | Independent | Rathfarnham-Templeogue | Re-elected |
| Ciarán Ahern | Labour Party | Rathfarnham-Templeogue | New |
| Yvonne Collins | Fianna Fáil | Rathfarnham-Templeogue | Re-elected |
| Lynn McCrave | Fine Gael | Rathfarnham-Templeogue | Re-elected |
| David McManus | Fine Gael | Rathfarnham-Templeogue | Re-elected |
| Justin Sinnott | Social Democrats | Rathfarnham-Templeogue | Re-elected |
| Mick Duff | Independent | Tallaght-Central | Re-elected |
| Teresa Costello | Fianna Fáil | Tallaght-Central | Re-elected |
| Britto Pereppadan | Fine Gael | Tallaght-Central | New |
| Patrick Pearse Holohan | Independent | Tallaght-Central | Re-elected |
| Jess Spear | People Before Profit–Solidarity | Tallaght-Central | New |
| Niamh Whelan | Sinn Féin | Tallaght-Central | New |
| Patrick Pearse Holohan | Independent | Tallaght-South | Re-elected |
| Baby Pereppadan | Fine Gael | Tallaght-South | Re-elected |
| Dermot Richardson | Independent | Tallaght-South | Re-elected |
| Kay Keane | People Before Profit–Solidarity | Tallaght-South | New |
| Louise Dunne | Sinn Féin | Tallaght-South | Re-elected |
The council: same source as Who’s in charge, above.
First preferences in Lucan, June 2024
Each candidate’s first-preference votes; the tick is the quota of 1,926. Elected candidates are in bold.
First-preference share by party in Lucan
The tick is the party’s share across all of Ireland.
11,673 of 25,920 registered voters turned out, 45%: the 129th-highest of 166 local electoral areas (all of them: 49.4%). The quota was 1,926: 11,553 valid votes for 5 seats, counted over 12 rounds. Paul Nicholas Gogarty (Independent) reached the quota on first preferences alone, and transfers decided the other 4. The last seat went to Joanna Tuffy (Labour Party) with 1,445 votes at the final count, 101 ahead of Derren Ó Bradaigh (Sinn Féin), who had 1,344.
Every candidate, count by count (12 counts)
| Candidate | Party | First preferences | Result | Votes at the end |
|---|---|---|---|---|
| Caroline Brady | Fine Gael | 1,199 | Elected at the last count, below the quota | 1,698 |
| Joanna Tuffy | Labour Party | 890 | Elected at the last count, below the quota | 1,445 |
| Liona O'Toole | Independent | 1,231 | Elected at count 12, on the quota | 2,017 |
| Vicki Casserly | Fine Gael | 1,574 | Elected at count 8, on the quota | 1,926 |
| Paul Nicholas Gogarty | Independent | 2,671 | Elected at count 1, on the quota | 1,926 |
| Eben Agbana | Independent | 92 | Excluded at count 3 | – |
| Lorraine Dwyer | Sinn Féin | 312 | Excluded at count 4 | – |
| JOSEPH ROy Kunjalakatu | Independent | 323 | Excluded at count 5 | – |
| Frank Conway | Fianna Fáil | 360 | Excluded at count 6 | – |
| Robert Coyle | The Irish People | 368 | Excluded at count 7 | – |
| Stephen Nolan | Social Democrats | 383 | Excluded at count 8 | – |
| Kamal Shah | Independent | 521 | Excluded at count 10 | – |
| Mark Kerins | People Before Profit–Solidarity | 378 | Excluded at count 11 | – |
| Jithin Ram | Green Party | 592 | Excluded at count 12 | – |
| Derren Ó Bradaigh | Sinn Féin | 659 | Not elected, standing at the last count | 1,344 |
Palmerstown-Fonthill: first preferences (31% of Esker)
First-preference share by party in Palmerstown-Fonthill
Turnout was 37.8%, 9,906 of 26,182 registered voters: the 160th-highest of 166 local electoral areas (all of them: 49.4%). With 9,693 valid votes and 5 seats the quota was 1,616; the count ran to 15 rounds. Nobody reached the quota on first preferences, so every seat was filled on transfers. The last seat went to Madeleine Johansson (People Before Profit–Solidarity) with 1,351 votes at the final count, 52 ahead of Paul Nicholas Gogarty (Independent), who had 1,299.
How Esker voted: same source as Who’s in charge, above.
Who stood, and who was elected, June 2024
Every candidate for South Dublin County Council, by party: the light bar is candidates, the solid bar those elected.
Share of candidates elected, all of Ireland
Parties with 10 or more candidates across the 31 councils.
111 candidates stood for 40 seats on South Dublin County Council in June 2024, 2.8 for each seat. Turnout across the council was 41.3%, the 30th-highest of 31 councils. Independent elected 10 of its 25 candidates. 43 of the 111 candidates were women (39%; 31% across the country), and 25 stood without a party. Across all 31 councils, 2,172 candidates stood for 949 seats, 2.3 for each.
Turnout in all 31 councils
Local elections: same source as Who’s in charge, above.
Esker is in Dublin Mid-West
5 TDs elected to the Dáil by single transferable vote on 29 November 2024, the whole constituency’s count.
Fine Gael · Minister of State at the Department of Children, Disability and Equality
oireachtas.ie ↗Sinn Féin
oireachtas.ie ↗Sinn Féin
oireachtas.ie ↗Independent
oireachtas.ie ↗Fianna Fáil
oireachtas.ie ↗TDs as the Oireachtas lists them today, with any office they hold; a by-election or a change of party shows here, the 2024 count below does not change.
First preferences in Dublin Mid-West, November 2024
Each party’s share of first preferences in Dublin Mid-West
Turnout was 55.9%, 47,930 of 85,769 registered voters: the 38th-highest of 43 Dáil constituencies (all of them: 59.7%). Eoin Ó Broin (Sinn Féin) reached the quota on first preferences alone, and transfers decided the other 4. Paul Nicholas Gogarty (Independent), 6th on first preferences, won a seat on transfers, overtaking Vicki Casserly (Fine Gael), who was 5th. The last seat went to Paul Nicholas Gogarty (Independent) with 7,106 votes at the final count, 891 ahead of Eoin Ó Broin (Social Democrats), who had 6,215.
Every candidate, count by count (13 counts)
| Candidate | Party | First preferences | Result | Votes at the end |
|---|---|---|---|---|
| Shane Moynihan | Fianna Fáil | 4,746 | Elected at the last count, below the quota | 7,231 |
| Paul Nicholas Gogarty | Independent | 3,646 | Elected at the last count, below the quota | 7,106 |
| Emer Higgins | Fine Gael | 4,798 | Elected at count 12, on the quota | 7,913 |
| Mark Ward | Sinn Féin | 5,323 | Elected at count 9, on the quota | 7,923 |
| Eoin Ó Broin | Sinn Féin | 9,892 | Elected at count 1, on the quota | 7,913 |
| Robert Coyle | The Irish People | 348 | Excluded at count 3 | – |
| Seanán Ó Coistín | Independent | 123 | Excluded at count 3 | – |
| Karla Doran | Green Party | 637 | Excluded at count 4 | – |
| Lynda Prendergast | Fianna Fáil | 850 | Excluded at count 5 | – |
| Alan Hayes | Independent | 855 | Excluded at count 6 | – |
| Colm Quinn | Aontú | 1,492 | Excluded at count 7 | – |
| Glen Moore | Irish Freedom Party | 1,435 | Excluded at count 8 | – |
| Francis Timmons | Labour Party | 2,270 | Excluded at count 9 | – |
| Gino Kenny | People Before Profit–Solidarity | 2,608 | Excluded at count 10 | – |
| Linda de Courcy | Independent Ireland | 1,823 | Excluded at count 11 | – |
| Vicki Casserly | Fine Gael | 3,723 | Excluded at count 12 | – |
| Eoin Ó Broin | Social Democrats | 2,907 | Not elected, standing at the last count | 6,215 |
Dáil Éireann: same source as Who’s in charge, above.
South Dublin County Council plans to spend €1,401 per resident in 2026
What its 2026 revenue budget pays for, service by service, and where the money comes from.
By service, per resident, 2026
What pays for it, 2026
Shares of what funds the 2026 budget; the tick is all 31 councils together.
Leaving out the HAP programme, that is the 16th-highest of the 31 councils per resident; across all of them it is €1,551. The budget is up 8% on 2025, when it was €391.9M.
Commercial rates on businesses pay for 37% of the budget. Its annual rate on valuation is 0.2800, the 16th-highest of the 31 councils that rate on revalued property. The Local Property Tax brings in another 5%.
Budget per resident, all 31 councils (without the HAP programme)
Show the services as a table, 2025 and 2026
| Service | 2026 | Per resident | 2025 | Change |
|---|---|---|---|---|
| Housing and building | €192.2M | €638 | €174.3M | 10% |
| Roads and transport | €46M | €153 | €41.9M | 10% |
| Water services | €12.3M | €41 | €16.2M | -24% |
| Planning and development | €37.1M | €123 | €32.9M | 13% |
| Environment and fire | €52.3M | €174 | €50.9M | 3% |
| Libraries, parks and amenities | €68.7M | €228 | €62.2M | 11% |
| Agriculture, education, health and welfare | €1.5M | €5 | €1.8M | -12% |
| Other services | €12.4M | €41 | €11.7M | 6% |
Budgets: Department of Housing, Local Government and Heritage, Local Authority Annual Budgets 2025 and 2026 (CC BY-SA 4.0), revenue account before inter-authority contributions are netted; residents: CSO Census 2022 (CC BY 4.0).
Each of South Dublin County Council’s 40 councillors speaks for about 7,530 residents
Residents per councillor on each of the 31 councils.
South Dublin County Council has 40 councillors for 301,075 residents: about 7,530 each, the 3rd-highest of 31 councils. The range runs from 9,410 residents per councillor on Dublin City to 1,960 on Leitrim County.
Residents per councillor, all 31 councils
Seats: local elections 2024 (Department of Housing, CC BY-SA 4.0); residents: CSO Census 2022 (CC BY 4.0).
Having a say in how Esker is run
Check, register or update your address online; the register closes 15 days before a poll (Sundays and holidays aside).
checktheregister.ie ↗Potholes, broken lights, dumping and graffiti, sent to the council.
FixYourStreet.ie ↗Council and municipal district meetings are open to the public, with agendas and minutes online.
sdcc.ie ↗Anyone may make a submission within five weeks of an application, for a fee of €20.
sdcc.ie ↗Each TD’s contact details are on the Oireachtas members page.
oireachtas.ie ↗The Electoral Commission’s guidance for candidates and how to be nominated.
electoralcommission.ie ↗What this data can and can’t tell you
- Single transferable vote. Voters number candidates in order. The quota is the valid votes divided by one more than the seats, plus one. A candidate over the quota is elected and their surplus passes on; when nobody is over it, the lowest is excluded and their votes pass on, until the seats are filled. The last seats can go to candidates below the quota once too few are left to fill them. First preferences show where support started, not who won.
- Which area. A town is placed in its council, local electoral area and Dáil constituency by where its residents live (Census 2022 Small Areas); an area holding 5% or more of them is listed too. Areas reach beyond the town, so their results are the whole area’s.
- Turnout. Votes cast, spoilt ones included, as a share of the register. Registers carry people who have moved or died, so every turnout reads low by a few points; compare areas, not the figure on its own.
- A close last seat. Shown only when the last candidate elected and the one left standing were both in the final count; the gap is between their votes then. Margins are not shown as headlines unless they are among the closest.
- Not on this page. Audited accounts and debt are published only as PDF statements, so they aren’t on this page. Votes before 2024 aren’t compared: the local electoral areas were redrawn for the 2024 local elections and the Dáil constituencies in 2023, so earlier results don’t cover the same ground. Who chairs each council and who runs it as chief executive aren’t in any open national list; each council names them on its website.
Questions about how Esker is run
Which council runs Esker?
The one council for Esker is South Dublin County Council: Ireland has a single tier of local government.
How many councillors does Esker have?
Esker is split between 2 local electoral areas: Lucan (5 seats, 69% of residents) and Palmerstown-Fonthill (5 seats, 31% of residents).
Which party has the most seats on South Dublin County Council?
No party has a majority. As elected, Independent 10 · Fine Gael 9 · Fianna Fáil 5 · Sinn Féin 5 · People Before Profit–Solidarity 4 · Labour Party 3 · Social Democrats 2 · Independent Ireland 1 · Irish Freedom Party 1 of 40 seats; a majority needs 21.
Who are Esker’s TDs?
Dublin Mid-West elects 5 TDs: Emer Higgins (Fine Gael), Eoin Ó Broin (Sinn Féin), Mark Ward (Sinn Féin), Paul Nicholas Gogarty (Independent) and Shane Moynihan (Fianna Fáil).
What was the turnout in Esker?
In Lucan, 45% of registered voters turned out in June 2024 (Ireland: 49.4%). In Dublin Mid-West, 55.9% in November 2024 (59.7%).
When are the next elections in Esker?
Local elections are held every five years, so the next are due in 2029, in May or June. A general election must be held within five years of the last one (November 2024), sooner if the Dáil is dissolved.
What does South Dublin County spend?
South Dublin County Council plans to spend €422.6M on day-to-day services in 2026, the most of it on housing and building.
Sources: Local and general election results 2024: Department of Housing, Local Government and Heritage (CC BY-SA 4.0); areas matched to towns by TownRatings from Tailte Éireann boundaries and CSO Census 2022 Small Areas (CC BY 4.0). · TDs: Houses of the Oireachtas Open Data (Oireachtas PSI Licence, CC BY 4.0). · Boundaries: Tailte Éireann (CC BY 4.0); population: CSO Census 2022 (CC BY 4.0).. Under Creative Commons Attribution 4.0 (CC BY 4.0).
Contains Central Statistics Office (CSO) data, Census 2022, and Tailte Éireann boundaries (CSO Urban Areas, Small Areas, local electoral areas, constituencies), under Creative Commons Attribution 4.0 (CC BY 4.0).