As of 8:20am this morning, I was the thirtieth person to vote at my friendly neighborhood polling place. It's hard to say with any certainty, but I believe this would be an indicator of higher than normal turnout for a primary election (which is usually pretty abysmal).
If you're wondering where you can fill in the circle (doesn't have quite same ring as "pulling the lever," does it?) for your favorite candidates check out the Minnesota Election Poll Finder. It's fast, it's easy, it's fun (especially when you're trying to blacken a circle with one hand while holding your squirming thirteen-month-old son with the other). Just vote baby.