Fine Gael TD Peter Fitzpatrick is expected to announce today that he is not running in the next general election.
The Louth TD and former county football manager won a seat for the party on his first outing in 2011.
But the local businessman has had minimal impact in the Dail over the past four years.
The favourite to replace him on the Fine Gael ticket is Dundalk councillor John McGahon, a nephew of former party TD Brendan McGahon.
Mr Fitzpatrick was approached by the party to run at the last election due to his high profile in the wake of Louth's run to the controversial Leinster football final in 2010.
Meath won the match in infamous circumstances when they were awarded a late goal by referee Martin Sludden. Replays clearly showed that Joe Sheridan had thrown the ball over the line to win the game.
The decision sparked a pitch invasion in which Sludden was jostled by angry Louth supporters.
Mr Fitzpatrick stepped in to protect the referee.