29 states and the District of Columbia have held presidential primaries so far this year. From official sources, these are the national totals (this just includes primaries, not caucuses):
Democrats: Hillary Clinton 13,920,268; Barack Obama 13,855,412; John Edwards 957,712; Bill Richardson 104,303; Dennis Kucinich 102,241; Joe Biden 81,091; Chris Dodd 35,092; Mike Gravel 23,872; other 640,198. The bulk of the “other” is the uncommitted slate in Michigan. The vote for that was huge, since Barack Obama and John Edwards weren’t on the Michigan Democratic ballot.
Republicans: John McCain 7,613,865; Mitt Romney 4,487,320; Mike Huckabee 3,955,006; Ron Paul 803,825; Rudy Giuliani 584,626; Fred Thompson 272,583; Alan Keyes 40,855; Duncan Hunter 37,580; other 69,137.