"The Big Tent"
You’ve probably got the sense that the Democratic political coalition is more ideologically diverse than the Republican coalition. I’d always thought of that previously in terms of its more demographically diverse base. But this fascinating exploration of the issue on the OK Cupid blog manages to not refer to that at all.
The upshot of their analysis is that the vast majority of Republicans are solid social and economic conservatives, whereas whereas a very large number of Democrats are actually not liberal along one of the two dimensions. This is hardly the last word in analyzing this issue, but it’s an interesting perspective.