3.78 gpa what are my chances

<p>I'm a junior at Winthrop University and i'm looking at some graduate schools political science PHD programs; Cal-Berkeley, UNC Chapel Hill, Duke University, University of Virginia, and Vanderbilt. I haven't taken the GRE yet but i've been preparing and I believe i'll do pretty well. If I score reasonably well on the GRE would I have a fighting chance to get into any of these schools?</p>