From ABC News:

Former governor Mitt Romney's wife, Ann, gave a $150 donation to the abortion-rights group Planned Parenthood in 1994, at a time that Romney considered himself to be effectively "pro-choice," the Romney campaign confirmed today.

The sum, $150, isn't exactly a large amount, obviously, but this certainly won't ease conservative fears that Romney's pro-life stance isn't much more than an act of political convenience.

Campaign spokesman Kevin Madden, in the task of some damage control, told ABC News: "The governor has not donated to Planned Parenthood or abortion-rights groups," he said, adding, "This is an issue that the governor has changed his position on, that the governor was wrong on in the past and believes he is right on now."