The Gallup Poll looks at the Democratic Party:
In many respects, the demographic profile of Democrats nationwide is similar to what it was in 2008, although Democrats have become somewhat less white and more liberal than the party that nominated Barack Obama as its presidential candidate that year. As a group, Democrats are more likely than average to be women and nonwhite, less likely to be religious or married, much less likely to be conservative, and much more likely to be liberal than the U.S. population as a whole.