Super Tuesday parties

New York, February 5: Democrat frontrunner Hillary Clinton hugs her daughter, Chelsea, at her primary night rally in New York Photograph: Elise Amendola/AP

New York, February 5: Confetti falls at Clinton's rally Photograph: Julie Jacobson/AP

Chicago, Illinois, February 5: Barack Obama and his wife, Michelle, greet supporters Photograph: Chip Somodevilla/Getty

Los Angeles, California, February 5: Supporters of Barack Obama react as they listen to speeches at the Super Tuesday election night party in Hollywood Photograph: Kevork Djansezian/AP

Illinois, Chicago, February 5: Barack and Michelle celebrate at the primary night HQ inside the Hyatt Regency Hotel Photograph: Paul J Richards/AFP

Phoenix, Arizona, February 5: John McCain and wife Cindy greet supporters Photograph: Win McNamee/Getty

Phoenix, Arizona, February 5: Volunteers pass out flags John McCain's at celebration. McCain swept the California Republican primary, sealing his position as leader the nomination, US media said Photograph: Don Emmert/AFP

Phoenix, Arizona, February 5: McCain signs autographs after addressing supporters at his election party at the Arizona Biltmore Hotel Photograph: Larry W Smith/EPA

Phoenix, Arizona, February 6: McCain at a press conference before flying to Washington DC Photograph: Mario Tama/Getty

Little Rock, Arkansas, February 5: Mike Huckabee greets a supporter at his election watch party Photograph: Danny Johnston/AP

Boston, Massachusetts, February 5: Mitt Romney and his wife, Ann, wait to be introduced at his primary night party Photograph: Michal Czerwonka /EPA

Boston, Massachusetts, February 5: Mitt at the Boston Convention and Exhibition Center in Boston Photograph: CJ Gunther/EPA