Democratic presidential hopefuls Barack Obama and Hillary Clinton are in Pennsylvania, which holds the party's next nomination contest April 22.

There is little doubt that the war in Iraq will be a major issue in this year's U.S. presidential campaign. But it remains to be seen whether voters will be in a mood to punish Republicans for getting the U.S. into the war in the first place, or fearful of supporting Democrats pushing for a speedy withdrawal.

The communications director for Democratic presidential hopeful Hillary Clinton is taking over as her campaign's chief strategist. The man who previously held the job resigned Sunday over his support for an international trade deal opposed by Clinton.

Democratic Senator Hillary Clinton's presidential campaign has removed Mark Penn from his job as chief strategist, following a controversy over his support for an international trade deal opposed by Clinton.

A new public opinion poll shows Democrat Hillary Clinton's lead over rival Barack Obama in Pennsylvania is down slightly as both contenders campaign in advance of the primary there on April 22.

Democratic presidential contender Hillary Clinton is sounding a defiant tone in response to calls from some supporters of rival Barack Obama that she quit the presidential race. Meanwhile, the presumptive Republican candidate, Senator John McCain, has begun a week-long tour aimed at reintroducing himself to American voters.

Democratic Party presidential candidate Senator Hillary Clinton says she is in no rush to end her hard-fought race for the party's nomination.

Prime Minister Kevin Rudd says he has confirmed face-to-face meetings with presidential candidates John McCain and Hillary Clinton as the US leg of his overseas tour continues.

Democratic presidential candidate Barack Obama has indicated he would have left his Chicago church if his long-time controversial pastor had not retired.

A new opinion survey shows Democratic presidential candidate Barack Obama continues to maintain solid support among voters, while opponent Hillary Clinton has seen a drop in her popularity.

U.S. Senator Hillary Clinton says she "misspoke" about an arrival in Bosnia 12 years ago, when she was first lady of the United States and said she landed under sniper fire and had to run to the waiting vehicles.

Technology has changed the way presidential candidates campaign for the White House. But their goal is the same as it has been since America's first presidential election: attracting voters to choose one particular candidate.