It's very simple and you can see it playing out almost everywhere. They aren't going to run on a platform of "Working to bring death camps to America!" which we all know to be a goal of the left. Their strategy is to make themselves look a little dim-witted. They don't expect that everyone will vote for them, but everytime a non-socialist says something bad about Kerry, Kerry'n'co complain about how mean that person is. They're hoping that if the populace is given a choice between someone who looks a little dim and someone who looks vicious, the dim one will win the election. They believe with all of their heart and soul that it is what happened in the 2000 election. That a large part of the population doesn't want to die in a socialist death camp continues to elude them.
Goe, because socialism brings death, oppression, and suffering, and the democrats want us to have more of it.