If a more moderate or center-right candidate was leading the CPC the CPC probably would have won. The CPC have lost 4 elections in a row, clearly their strategy isn't working and key changes need to be made. Losing to probably the worst government in our history 4 straight times is embarrassing for them.
The previous 2 elections the CPC actually had the most votes of any party but still lost.
The CPC needs to decide if they want to be conservative or if they want to win. If you and they like PP as leader that's fine but they'll probably just keep losing. Most Canadians just aren't very conservative, and they don't appeal to urban voters which is where most of the seats are. I wish we had a moderate party, or even the PC's.