They KNOW better but for the 100%ers this is another case where the below comes into play in US politics. All they care about is that their particular emotional hot button be pushed. It the "politcs as sport" mentality that has taken over too much of the political discourse in this country, For them to "win", anyone who disagrees even .5% with their dogma must "lose". It one of the more sorry aspects of US politics is how often things are done because of the egos of the players rather then the best interests of the country.
Those who want to fight in the general election rather than in the primaries really scare me for the future of our country.