How to watch, listen and follow the Conservative leadership results this weekend

CBCwill have full coverage this weekend as the Conservative Party of Canada picks its new leader.

Four candidates Leslyn Lewis, Peter MacKay, Erin O'Toole and Derek Sloan are competing for the party's top post and to become leader of Canada's Official Opposition.

Mail-in ballots are due by Friday at 5 p.m. ET and the results will be announced by the party during an event in Ottawa on Sunday evening -- NOTE: TheConservative eventhas been delayed due to vote-counting issues. Latest update: 8:30 p.m. ET start. CBC News special coverage is underway.

Here's how you can follow CBC's special coverage as Conservatives pick their next leader:

Saturday

Listen to The House,with host Chris Hall, on CBC Radio One starting at 9 a.m. ET and on the CBC Listen app. The CBC's Catherine Cullen and Hannah Thibedeau, who have been following the race from day one, will offer their insights on the candidates with all the backroom chatter leading up to the results.

Stay with CBC News Network and cbcnews.ca throughout the dayfor the latest news.

Sunday

Listen:Cross Country Checkup, hosted live from Calgary by Kathleen Petty, asks: "Who should lead the Conservative Party of Canada?" Tune inlive (1 p.m. PT, 2 p.m. MT, 3 p.m. CT, 4 p.m. ET, 5 p.m. AT, 5:30 p.m. NT) on CBC Radio One and streaming on the CBC Listen app and Facebook Live.

Watch:CBC News special coverage hosted by Chief Political CorrespondentRosemary Barton and featuring Vassy Kapelos, host of Power & Politics,startsat 5 p.m. ET on CBC News Network andCBC TV and livestreaming oncbcnews.ca, CBC GEM, YouTube, Facebook and Twitter.

Listen: National Affairs Editor Chris Hall and the CBC's Martina Fitzgerald host special coverageon CBC Radio One and theCBC Listen App starting at 7:30 p.m. ET (note revised time).

Follow:cbcnews.cafor the latest news from Kathleen Harris and JP Tasker as results are announced and for analysis by ric Grenier and Aaron Wherry afterward.

The National will have a full recap and analysis of the Conservative leadership outcome at 10 p.m. on CBC Television and CBC Gem. On Monday morning, tune it to World Report on CBC Radio One and watch CBC News Networks' continuing coverage for reaction to the leadership result.