Tim Pawlenty had courted Dawson and Whetsell, both part of Newt's team now, to be in his campaign

From Politico in August 2010:

According to multiple South Carolina GOP sources, Pawlenty senior adviser Terry Nelson met recently with four of the state’s most influential consultants: Warren Tompkins, Richard Quinn, Walter Whetsell and former state GOP chairman Katon Dawson.

Tompkins is yet to sign on with any Presidential candidate, while Quinn is with former Utah Governor and U.S. Ambassador to China Jon Huntsman.