Illinois Sen. Barack Obama has pulled ahead of his archrival, New York Sen. Hillary Rodham Clinton, in the battle for the hearts and minds of members of the House and Senate who will be “superdelegates” at this year’s Democratic National Convention. For a detailed list of Capitol Hill endorsements for Clinton and Obama, along with other features providing news and background information in advance of this year’s congressional elections, click here to check our Campaigns 2008 page regularly.