<p>Where do you want to situate yourself in the future? Someone said it right before. If you want to be a west coaster, Cal would be more known. East Coast/Midwest, Northwestern and Cornell are more known.</p>
<p>HOWEVER, you say you want to get into a good grad school. Going to most reputable tier 1 / tier 2 colleges gives you good opportunities for getting into great grad schools. Grad students here come from all over the place: Syracuse, Cal, UPenn, Stanford, Florida State, Utah State, etc. If you work hard, do internships, get involved, do well..you'll have a darn good chance at any grad school (whether you are at Cal, NU, or Cornell). Poli Sci programs are strong in Cal, Cornell, and NU (I know Berkeley's poli sci is actually really famous in comparison to the others). </p>
<p>Honestly, picking any of them will educate you well and give you really good opportunities for graduate school. Visit the schools, and choose where you think you'll be happy. </p>
<p>Also think about out of state vs instate (I know out of state can seem glamorous..but it can be a real pain at times).</p>
<p>Location:<br>
Berkeley is in a really social place. There's always something going on. You'll have never ending action around you. Plus, there's really great eateries nearby.</p>
<p>Cornell: Kind of in the middle of nowhere. Very calm/peaceful.</p>
<p>NU: I find it pretty calm and peaceful. I don't get up to Chicago, that often to tell the truth (but Chicago rocks!). The campus can be pretty dead at times. Evanston's a nice town, though. </p>
<p>Overall: since cost is the same for you, I think it comes down to what kind of environment you want and whether you want to live in state. You'll be fine in any of their poli sci programs.</p>