If folks disagree with just five or ten percent, then I say that's not a bad average. If folks disagree with a significant portion, then I say "don't vote for 'em."
There are a lot of reasons to vote for one political party, including, "we're not the other guy," which I'll accept. But to ask folks to vote for someone they don't agree with on a majority of issues is a fool's game. It's akin to the guy who says, "I'll not be held prisoner by my principles."
Look at the SC appointees and then say that the Conservatives weren't paid back for their support. If they can't field their own candidates with enough support to win and so decide to help the left through their "I'll show those Republicans, I'll stay home" attitude then they are putting party before country and leaving us holding the bag. F'them.