Nominations close today for general election candidates who wish to get their name on the ballot paper for the February 8th election.
To date, Midwest News is aware of 11 candidates contesting the 4-seater Mayo constituency, but that could increase today.
For voters, the deadline for registering to vote is five o'clock this evening.
Anyone who wants to have their say on February 8th must be on the supplementary register by close of business.
Thousands of people who turned 18 since last May's local and European elections are being encouraged to check the register.
Those not already eligible to vote can download a form, get it signed and witnessed at a Garda station and bring it to their local council office by 5pm this evening.