I personally feel that both groups are so polarized right now. And by that, I mean each group is polarized on one of two sides of each group. I feel like there is the majority of Democrats and Republicans who have drifted more toward the center. Based on what I've observed, much of the more centrist Republicans are typically younger. Teens, through early 30's, perhaps. I've seen many stark Republicans become much more lenient within the last few years because they are aware enough to give Obama credit where credit is due. The stark and blindly faithful group (the minority, at least in society), are the type to call Obama a socialist and Muslim terrorist. These two groups obviously want different things. The more centrist Republicans are more willing to reach a compromise, whereas the others will not have it any other way than their way, which is, of course, completely detrimental to fixing the country.
For the Democrats, the more centrist ones are the ones who are also more willing to compromise. They understand that Obama hasn't done all that he promised he'd do, and they criticize him for that, but they also understand that most of the stagnation comes from the dead-beat Congress we have. The more leftist Democrats are the ones who have blind faith in Obama and are all liberal or nothing - also a minority. I think the Democrat party is debating within itself less because the extreme leftist group is more of a minority than the rightist minority. I think liberals, even the extreme, all have the same basic wants and desires, whereas much of conservative value comes from tradition and religion, which is VERY subjective.
Long story short, I think there's more gray area in conservative philosophy. Which is funny, since the loud ones are all "this is this and that is that." Black and white. But because conservative philosophy is borne from theology and traditional family values, there is so much room for interpretation depending on what theology an individual is coming from.
I hope that made sense. That's the way I see it. The good news, though, is that I truly do think that we're on the verge of a socio-political awakening. I feel big change coming.