Arizona and Michigan county maps

[Averroës Nix]

Here's an attempt:

Michigan - 44% Romney, 38% Santorum



Arizona - 45% Romney, 34% Santorum



EDIT: AZ map, deferring to realisticidealist's criticism.

[Averroës Nix]

That Michigan map would definitely be a Santroum victory (remember that Wayne County's proportion of the state in a GOP primary is waaaaaaaaaaaaaaay less than it is in a general election.)

True, but Wayne + Oakland and Macomb contained around 300,000 votes in the 2008 primary. The total for all Romney counties on my map is probably above 400,000 (statewide turnout was 870,000).

[Averroës Nix]

That Arizona map would easily result in Romney winning over 50% of the vote.

You're definitely right about that - and I don't think that he'll reach a majority in the Phoenix-Flagstaff corridor. Map has been adjusted.