At the end of the night, there will be some new MPs in Ottawa representing Calgary and Victoria.

But when it comes to the three federal by-elections Monday night, all eyes are on the Durham riding here in Ontario. That's the seat of former Minister of International Cooperation Bev Oda, who resigned amid an expense scandal which saw her bill taxpayers for not only a $16 glass of orange juice but a $250 penalty for smoking in a hotel room.

Of the candidates, Conservative Erin O'Toole is a voter favourite if you listen to the polls. O'Toole was even endorsed by hockey great Wayne Gretzky. O'Toole has tried to distance himself from the Oda controversy.

Liberal Grant Humes and Larry O'Connor of the NDP are representatives from the other major parties battling it out. This is Humes second time running, placing third in 2011 to Oda and then-NDP candidate Tammy Schoep.

Oda held the riding since 2004. Before then it was Liberal red for 11 years.