Mitt Romney's biggest problem

He's articulate, he's handsome, he seems the ideal presidential candidate, and many Republicans like the conservative things he's saying these days. But many see him as a flip-flopper, grabbing onto conservative ideas rather late in the game. The Politico finds another example today:

Former Gov. Mitt Romney attacked Sen. Barack Obama yesterday for purportedly wanting sex education in kindergarten.It turns out, Romney himself once indicated support for the same sort of sex-ed approach -- "age-appropriate" -- that Obama backs.In a Planned Parenthood questionnaire he filled out during his 2002 gubernatorial run, Romney checked 'yes' to a question asking, "Do you support the teaching of responsible, age-appropriate, factually accurate health and sexuality education, including information about both abstinence and contraception, in public schools?"