According to Election Central:
Time for some staff notes, junkies: Former Howard Dean pollster Paul Maslin has agreed to join Bill Richardson’s Presidential campaign, I’ve confirmed.
The oft-quoted Maslin was Dean’s pollster from March 2003 to the conclusion of Dean’s Presidential campaign nearly a year later. Reached for confirmation, Maslin confirmed he’d agreed to join the Richardson campaign but declined to comment further.
Greg Sargent has more at the link.