Ontario's mayoral races were decided Monday night, with the results a mix of upsets, tight races and easy incumbent victories.

In Toronto, David Miller easily won re-election, earning over 63 per cent of the vote to defeat Jane Pitfield.

Bob Chiarelli wasn't as fortunate in Ottawa, finishing third in an attempt to win a third mayoral term. Technology executive Larry O'Brien is the city's new mayor.

Under new provincial legislation, for the first time, all of the candidates elected on Monday will serve four-year terms instead of three.

Following are the mayoral results in some of the province's other cities:

• Challenger Dave Aspden became the new mayor of Barrie, defeating Rob Hamilton.
• Longtime provincial Tory MPP Cam Jackson emerged from a competitive race in Burlington in the bid to succeed Rob MacIsaac.
• In Hamilton, Fred Eisenberger won a seesaw battle over incumbent Larry Di Ianni.
• Kingston mayor Harvey Rosen won a tight race over challenger Rick Downes, winning by less than 800 votes. Rosen won 83.5 per cent of the vote in the last election.
• Carl Zehr won two-thirds of the vote in Kitchener, securing another term.
• Anne Marie DeCicco-Best won a third term in London, turning aside the mayoral bid of Joe Fontana, who had represented the city for the last 16 years federally as a Liberal MP.
• Ted Salci earned a second term in Niagara Falls, defeating longtime alderman Wayne Campbell.
• In North Bay, incumbent Vic Fedeli easily defeated former mayor Stan Lawlor.
• In Oakville, former YTV co-founder Rob Burton beat six-term mayor Ann Mulvale.
• In Oshawa, John Gray won re-election in a romp.
• Former city councillor Paul Ayotte became Peterborough's mayor, as Sylvia Sutherland did not seek re-election.
• In St. Catharines, Brian McMullan emerged victorious from a crowded field to replace Tim Rigby, who did not seek a fourth term.
• Mike Bradley easily won a seventh term as mayor of Sarnia.
• In Sault Ste. Marie, John Rowswell won another term as mayor, winning nearly two-thirds of the vote.
• Stratford Mayor Dan Mathieson was re-elected with approximately 75 per cent of the vote.
• In Sudbury, former NDP MP John Rodriguez finished more than 20 percentage points ahead of incumbent Dave Courtemanche.
• Thunder Bay Mayor Lynn Peterson easily won re-election.
• Tom Loughren was acclaimed mayor of Timmins, replacing the retired Vic Power.
• Brenda Halloran became the new mayor of Waterloo, beating incumbent Herb Epps.
• Windsor Mayor Eddie Francis brushed off charges from the opposition that he would leave before his next term expired to run federally as a Conservative, winning over 77 per cent of the vote.