Dublin West: Who are the candidates and who could make gains? Everything you need to know before voting

The area has been used to having a representative in very prominent positions in government, with Varadkar either Taoiseach or Tánaiste for much of the past seven years. Of course it now has the Green Party leader, with Roderic O'Gorman having taken over from Eamon Ryan, while Finance Minister Jack Chambers who is also his party's director of elections.

Varadkar's replacement is Senator Emer Currie, who should certainly take a seat. Her father Austin was a leading figure in Northern Ireland's civil rights movement, a co-founder of the SDLP and a TD himself for more than a decade. He was also Fine Gael's presidential candidate in 1990.

Chambers recently delivered his first Budget as Finance Minister and will run with Lorna Nolan, who is a newcomer without council experience. It suggests Fianna Fáil will find it hard to land a second seat. O'Gorman and Sinn Féin's Paul Donnelly should be secure. Donnelly has had a very low profile in the last Dáil, suggesting he has been devoting himself to local issues. He had the most first preference votes the last time and was elected on the first count. His running mate is Breda Hanaphy.

Current TDs (five seats) Leo Varadkar (FG), Jack Chambers (FF), Roderic O'Gorman (GP), Paul Donnelly (SF)

Who could make gains? With an extra seat added in the constituency and the departure of Varadkar, there is an opportunity for one of the big parties to get a second seat or for one of the smaller parties to take one.

Fine Gael will be happy to hold onto Varadkar's seat with Currie. On current form, Sinn Féin won't have enough to challenge for a second seat. Apart from Castleknock, it's a fairly left-wing constituency, and it may be that former TD Ruth Coppinger, now restored to the council, will make a step up and regain her Dáil berth. Popular Labour councillor John Walsh is a dark horse.

Are there any boundary changes that could be crucial? Not really. Some sparsely-populated tranches of Fingal are being absorbed into the expanded constituency, but not enough to make any difference.

What issues are under the spotlight? As in much of the country, the housing crisis is a massive issue in Dublin West, which is the fastest expanding part of Dublin. After that it's roads and traffic, including the cost of commuting on the M50. Schools are a perennial bugbear, along with the perceived lack of gardaí for the area, where there has been a number of high-profile shootings.

Umar Al-Qadri (Ind)

Jack Chambers TD (Fianna Fáil)*

Cllr Ruth Coppinger (PBP)

Senator Emer Currie (Fine Gael)

Susanne Delaney (Ind)

Paul Donnelly TD (Sinn Féin)*

Cllr Tania Doyle (Ind)

Cllr Breda Hanaphy (Sinn Féin)

Ellen Murphy (Social Democrats)

Lorna Nolan (Fianna Fáil)

Roderic O'Gorman TD (Green Party)*

Cllr Patrick Quinlan (National Party)

Natalie Treacy (Ind)

Cllr Ellen Troy (Aontú)

Cllr John Walsh (Labour).

Further candidates may be added to the ballot

*Indicates a sitting TD