According to CNN the Democratic candidates had received a total of 135,582 votes with 53% reporting, while the Republican candidates had received a total of 107,579 votes with 50% reporting.
What's interesting about those numbers is that CNN also reports that there are 850,836 registered voters in the state and they are supposed to be 26% Democratic (around 221,217 voters), 30% Republican (around 255,251 voters), and 44% Independent (around 374,368 voters). From some quick math, we can infer that the polls were right: independents broke heavily democratic.
It's not possible to tell exactly how the split went, but with some simple assumptions, it is possible to tell that it favored us bigtime.
Simple Baseline Assumption: Republican and Democratic voters turned out in proportion to their statewide percentages. That is, registered Republican voters made up about 30% of the votes, while registered Democrats made up about 26%.
With this simple assumption, then Independents would have had to break ~64% Democratic to get the results we are seeing tonight.
I'd call that a victory for all of us, no matter who finally ekes this out.
Update [2008-1-8 22:11:54 by shock]: I should point out that a more "conservative" assumption of higher turnout rates among Democratic voters also bodes well for us.
Update [2008-1-9 0:37:21 by shock]: At 91% reporting for each, the split calculation hasn't changed much; it's now ~65%. What's even more encouraging is that the second place Democratic candidate (Obama) got way more votes than the first place Republican candidate (McCain)! (Obama's margin of victory over McCain was more than McCain's over Romney!)