He still caucuses with the Democrats , giving them their razor-thin majority in the chamber . Senator Joe Lieberman was Democrats ' vice presidential nominee in 2000 . Lieberman broke with Democrats and became an Independent . McCain picked up endorsements from The Des Moines Register , The Boston Globe . McCain tied for second among Democratic candidates in New Hampshire .
Senator Joe Lieberman was Democrats ' vice presidential nominee in 2000 . Lieberman broke with Democrats and became an Independent . McCain picked up endorsements from The Des Moines Register , The Boston Globe . McCain tied for second among Democratic candidates in New Hampshire .