I hear this over and over, and having a few elections under my belt, I have to wonder how anyone could still believe that canard.
Are you going to excuse such behavior, and claim that these people are downtrodden or disgusted with the way things are, or perhaps that this is to be expected during an election season and they're really wonderful people? Then check out this photoessay from January 2006, before the current election season even began, on a topic not related to this election, and try to tell me that with a straight face.
Behold, your betters. If only they could direct as much anger to our country's enemies.
Update: HotAir has a few more examples that should put this lie to rest.
Update #2, 10/13/08: Women especially should enjoy this picture (be forewarned about the language). Lefties, these are your "peeps".