recent polls, and polls of the past have shown that the most content are conservative, middle-aged, white males ...
so, I guess this would make Democrats the more miserable of the two.
I think this has less to do with money, considering rural america is overwhelmingly conservative, white and less affluent than your typical urban liberal snob wailing about "global warming",and championing the unrestricted death of fetuses and belief in god.
Although, during downtimes or strife the majority seems to vote for "Hope" and "Change", until they wake up to the fact that the change seems hopeless. This should be around 2010.