A former junior minister and his son have put their names forward for selection by Fianna Fáil in the same Dáil constituency.
Wexford TD John Browne and his son James, who is a sitting councillor, are among six candidates preparing to contest next month's selection convention.
Fianna Fáil is expected to run at least two candidates in the five-seat constituency, which is home to ministers Brendan Howlin and Paul Kehoe, as well as Independent TD Mick Wallace.
Fine Gael TD Liam Twomey recently announced his decision not to defend his seat.
However, Fianna Fáil's strategy rests on whether Mr Browne decides to step aside ahead of the convention.
He told the Irish Independent last night that he has recently recovered from a spell of ill health and that he will make his decision based on medical advice.
It's likely that if the TD does run, his son James will then withdraw his name from the nomination process.
Fianna Fáil sources say the party is likely to run two or even three candidates in Wexford.
Councillors Malcolm Byrne, Michael Sheehan and Michael Whelan - brother of the journalist Noel Whelan - are also contesting.
Barbara-Anne Murphy is the sole female candidate in the race.