There's been a lot of political buzz about Massachusetts Gov. Mitt Romney's 2008 bid for the Republican presidential nomination, and now I know why: In one swoop, his Commonwealth PAC this week hired what could be the A-team of political consultants. "Mitt Romney means business," says media guru Alex Castellanos. The proof: Romney picked one of Florida Gov. Jeb Bush's longtime advisers, Sally Bradshaw, who has worked for both President Bushes and was Jeb Bush's chief of staff for a while. What does her hiring mean? "Where Sally Bradshaw goes, a lot of Jeb Bush's people will follow," says Castellanos,...