There were even robocalls going out for dems to vote for Santorum. Kos and Huffo are as influential with Dems as Rush and Hannity are with Conservatives. They have a very sophisticated ground game.
Romney was the frontrunner in Michigan and Ohio. The goal was to weaken him and give those states to Santorum. The fact there was such a strategy should tell reasonable people that when your enemy uses their vote to skew an election, it is not to improve your chance of winning in the general.
That being said, I will vote for anyone but Obama and Romney.
Can't buy it. Romney is their dream opponent, I don't think even Democrats are stupid enough to try and sabotage the guy they know they can beat.
Believe it or not, some Democrats may actually like Santorum. There are many disillusioned Dems out there, I stood next to one at a Tea Party event, and they might want someone they can trust to abolish Obamacare.