Recently many liberals and leftists have been calling themselves progressive, including Supreme Court nominee Elena Kagan who said "My political views are generally progressive." This
Gallup poll shows that most people don't know what "progressive" means.
Progressive is a synonym for liberal, for socialist, for leftist. What it is not is conservative or middle of the road.
There, I'm glad we've cleared up the confusion. Hat tip to Lucianne.com for the link.