RECENT POLL Martin O'Malley : 47 Robert L. Ehrlich Jr. : 46 -LRB- Potomac , Inc. , Oct. 30 -RRB- Massachusetts Courting national Republicans for a possible 2008 presidential bid , departing Gov . Mitt Romney has veered to the right , forcing his would-be successor , Lt. Gov . Kerry Healey , to scramble to maintain a more moderate image .