Andrew Gelman answers the question: Yes in blue states, no in red states—and he has the charts to prove it.
Bottom line:
There are more rich conservatives than rich liberals (just as there are more rich Republican voters than rich Democratic voters) but the minority of upper-income Americans who are rich do play an important role in our society. It’s worth spending some time thinking about rich liberals, but it’s also worth remembering that most rich Americans are not liberal.