The Senate voted today to block a White House-backed constitutional amendment to bar same-sex marriages, dooming its prospects for approval by Congress this year but ensuring it an emotionally-charged role during campaigns this fall.

Republicans who voted to block the amendment were Susan M. Collins (Maine), Olympia J. Snowe (Maine), John E. Sununu (N.H.), Lincoln D. Chafee (R.I.), Ben Nighthorse Campbell (Colo.) and John McCain (Ariz.).

Now you know the Republican Senators with guts.