A former Ottawa mayor says he's ready to take on the position again. Jim Watson, who until recently was the Liberal MPP for Ottawa-West Nepean, tells CTV Ottawa he will submit his papers Monday morning.

Although Watson announced his intentions a few weeks ago, this formal entry into the race on Monday at 11 a.m. will mark the beginning of fundraising for his campaign.

He will formally register at the Orleans Client Service Centre, located at 255 Centrum Blvd.

Liberals select nominee for Watson's old riding

On Sunday, the provincial Liberals nominated fellow former Ottawa mayor Bob Chiarelli to stand for a by-election. A date will be announced shortly.

Watson joins a crowded field of confirmed candidates for the mayor's race, which include Robert Gauthier and Coun. Alex Cullen. Incumbent Larry O'Brien says he is still considering his options, and will make a decision in June.

Watson previously served as Ottawa mayor from 1997-2000, prior to amalgamation. He also sat on city council from 1991-1997.

The election will take place on Oct. 25 and will elect one mayor, 23 city councillors and several school board trustees. Nominations run until Sept. 10.