I must admit, I don't know all the nuances of how voting in the 2008 primary works.  As I understand things, New Hampshire is required, by state law to have the first primary, right?  So, should we assume that the first vote in the 2008 primaries will be cast in New Hampshire?  Perhaps not

New Hampshire does not have early voting, so the first vote in the New Hampshire primary will be January 22nd, with perhaps a few possible exceptions for absentee ballots.

California is scheduled to have its primary on February 5th, and has early voting, which begins on January 7th. 

Over on MyDD, there is a diary entitled, Vote Hope's California Challenge: Beat Iowa.

Early voting in California will begin Jan. 7, and we will be running a sophisticated, voter-file-driven program to turn out our early votes before the Iowa caucuses even begin.

Their goal is to get 500,000 Obama supporters to vote in the California primary before the Iowa caucuses (let alone the New Hampshire primary).

(Cross posted at BlueHampshire)