By Paul Bedard, Washington Whispers
Even before his honeymoon is over, Republicans are giving new Massachusetts Sen. Scott Brown a wary eye. "Who does he want to be?" asks a Senate GOP-er. The choices: a senator eager to run for re-election in 2012, who will have to walk a politically moderate line to keep Democratic-leaning Bay State voters happy. Or a potential presidential or vice presidential candidate, who'll have to tack right to win primary voters. The key to the answer will be how he acts this year, says our tipster. "He'll speak up if he wants to run against Obama. He'll lay low if he wants to run for re-election."