Im not too sure I understand. The Alberta Liberals are to the left of most provincial Liberal parties, and probably to the left of the national one as well. Why would you vote for them if you're a federal Tory? Especially when you have a Red Tory like Redford to vote for?
I'm mainly talking about back in the early 2000's when they were more fiscally conservative. I voted for them because I thought the Tories had been in too long, and also I thought Ralph Klein was an idiot. I voted PC in 2008, but switched to the Wildrose Party, as I thought it was time for change in government, and the PC's hadn't balanced the budget. My voting record's kind of dodgy,
2001: Liberal
2004: Liberal
2008: PC
2012: Wildrose