Alex White has refused to rule out going into government with Sinn Féin, if he is elected Labour leader.
The junior health minister says no party can rule themselves out when it comes to forming a government after the next election.
With Arthur Spring ruling himself out of the running this morning, Alex White and Joan Burton are now set to be the only two candidates running for the Labour leadership.
And while Joan Burton has openly said she wants to stay in power with Fine Gael after the next election, Mr White is keeping Labour's options open.
The junior health minister says no party - including Sinn Féin - could be ruled out of government if they had enough seats in the Dáil.
Labour nominations close at noon, with four candidates in the running for Deputy Leader - Alan Kelly, Sean Sherlock, Michael McNamara and Ciara Conway.