Apart from Fianna Fail, all the other major parties have selected their candidates, with Fianna Fail confirming this afternoon their convention will take place in Glenties on Sunday.
So far there are four decalred candidates for the Donegal South West by-election.
Donegal County Councillor Barry O'Neill will contest for Fine Gael, Frank McBrearty Junior will run for Labour, while Senator Pearse Doherty will contest for Sinn Fein.
Indendent County Councillor Thomas Pringle, from Killybegs, has also confirmed his intention to run.
Tom Conoghan, based in Donegal Town, is expected to throw his hat into to the ring as an independent.
Fianna Fail are the only main political party not to have selected a candidate - it is understood that their selection convention will be held this weekend when Senator Brian O'Domhnaill is the odds on favourite to get the nod.
As confimed today, the writ has been moved with the public going to the polls on Thursday the 25th of November with counting to take place on November the 26th.
Legislation states that nominations to contest the elections must be recieved by 12 noon on the 7th day after the writ is issued excluding Sunday - so the closing date as a result of today's developments will be Friday week at 12 noon.
However, a comment by Tanasiste Mary Coughlan during her speech this afternoon suggests that the outcome of Sunday's selection is a foregone conclusion.