US elections: Hillary Clinton's campaign

January 8 2007: A man carries a Clinton sign through the snow before her arrival at a polling station in Concord, New Hampshire Photograph: Justin Lane/EPA

January 27 2007: Campaign buttons for Hillary Clinton in a plastic bag in Des Moines, Iowa, after she formally announced her candidacy , Photograph: Charlie Neibergall/AP

January 23 2007: Barack Obama stands in front of Clinton as they arrive for George Bush's annual state of the union address Photograph: Larry Downing/Reuters

January 27 2007: Clinton speaks during a campaign stop at East high school in Des Moines, Iowa Photograph: Mandel Ngan/AFP/Getty

March 20 2007: Former president Bill Clinton listens to his wife as she speaks during a fundraiser in Washington DC Photograph: Brendan Smialowski/Getty

March 28 2007: Clinton addresses the AFL-CIO Building and Construction Trades presidential candidate forum in Washington Photograph: Jim Young/Reuters

April 26 2007: Obama and Clinton talk prior to the first debate of the Democratic presidential campaign at South Carolina State University Photograph: Win McNamee/Getty

December 29 2007: Clinton applauds as she campaigns in advance of the Iowa caucus at North Scott junior high school in Eldridge Photograph: Stan Honda/AFP/Getty

January 2 2008: Clinton speaks at a campaign event at Kirkwood community college in Cedar Rapids, Iowa Photograph: Joe Raedle/Getty

January 7 2008: Clinton reacts emotionally to a question during a campaign stop in a cafe in Portsmouth, New Hampshire Photograph: Brian Snyder/Reuters

January 7 2008: Clinton points to the crowd as she takes the stage for a campaign stop in Dover, New Hampshire Photograph: Brian Snyder/Reuters

January 8 2008: Clinton visits people voting at the Parker Varney school polling station in Manchester, New Hampshire Photograph: Joe Raedle/Getty

January 8 2008: Clinton points to a supporter at her New Hampshire primary night rally in Manchester Photograph: Carlos Barria/Reuters

January 18, 2008: Clinton takes the stage at a campaign rally in Reno, Nevada Photograph: Elise Amendola/AP

January 19 2008: Clinton receives a hug from her husband during a town hall meeting at McCluer North high school in Florissant, Missouri Photograph: Mike Stone/Reuters

January 26 2008: A supporter sits alone after listening to Clinton at Tennessee State University in Nashville Photograph: Sloan Breeden/Getty

February 5 2008: Clinton and her daughter, Chelsea, embrace during a Super Tuesday primary campaign rally in the grand ballroom of the Manhattan Centre in New York Photograph: Justin Sullivan/Getty

March 26 2008: A 1996 photo of the then first lady greeting US soldiers as she arrives at Tuzla air base, in Bosnia, for a one-day visit. Clinton had to admit that her claim during the primary campaign that she came under sniper fire during the visit was wrong Photograph: Sasa Kralj/AP

April 19 2008: Clinton rallies the crowd in the rain as she campaigns in McKeesport, Pennsylvania Photograph: Charles Dharapak/AP

June 1 2008: Clinton is reflected in a mirror as she speaks at her rally on the night of the Puerto Rico primary Photograph: Robyn Beck/AFP/Getty

June 3 2008: Clinton greets supporters in New York City after her rival, Barack Obama, secured the nomination following the primaries in Montana and South Dakota Photograph: Chris McGrath/Getty

June 3 2008: Clinton speaks at her rally on the day of the Montana and South Dakota Democratic primary. Clinton said she had made no decision yet on the future of her bid for the presidential candidacy Photograph: Robyn Beck/AFP/Getty

June 3 2008: A Secret Service agent walks past a sign for Clinton on the floor at the final primary night event for Clinton in New York Photograph: Justin Lane/EPA