Via Marc Ambinder, live blogging about Michigan:
Early Exit Poll Trends...
** 68% of voters in the Republican primary identified as Republican; a quarter said they were independents and 7% said they were Democrats.... (in 2000, only 45% said they were Republican)..
** 44% say they decided in the final week
These results are based on early exit poll tabulations which may be weighted heavily to what exit pollsters call the "prior estimate" -- in essence the average of the vote preference as measured by pre-election polls. As actual results become available in each sample precinct, they will adjust the results to bring the exit poll vote estimate (that we cannot yet see) into line with the actual count within the sampled precincts. In other words, be careful, these results may change.
The exit poll tabulations for the Republicans and Democrats should appear at the links in this sentence on MSNBC.com shortly after the poll close. I'm going to be offline for a few hours, but feel free to add your thoughts to the comments.