Donald Trump has unleashed a torrent of Twitter attacks on the party he hopes to lead to the White House.

Donald Trump has fired fresh criticism at Republican House Speaker Paul Ryan after he effectively abandoned hopes of Mr Trump winning the presidential election.

The non-partisan commission on presidential debates said there was indeed a problem with Donald Trump's microphone during Monday night's first presidential election debate.

Donald Trump has insisted drugs played "a very, very big factor" in violent protests that erupted in North Carolina overnight following the police shooting of a black man.

Hillary Clinton is recovering from her pneumonia and remains "healthy and fit to serve as president of the United States", her doctor said in a statement.

US presidential hopeful Donald Trump has handed over a one-page summary of a recent physical examination on a doctor's television show - but his campaign will not reveal what was disclosed.

Hillary Clinton has accused Donald Trump of insulting America's veterans and pressing dangerous military plans around the globe, seeking to undercut his appeal to service families in southern voting battlegrounds.

More than half the people outside the government who met with Hillary Clinton while she was US secretary of state gave money - either personally or through companies or groups - to the Clinton Foundation.

Donald Trump insists he is clear on his proposal to deport the estimated 11 million people living in the United States illegally - even though his new campaign manager now says his stance is "to be determined".

Hillary Clinton has shrugged off Donald Trump's latest campaign shake-up, saying he is the "same man" who would cut taxes for rich people while she would force the super-wealthy to pay more.

Hillary Clinton has vowed to conduct a national security and foreign policy that Americans could be proud of, adding that Donald Trump "just absolutely bewilders" her when he talks about his policies around the globe.

Donald Trump has blamed the "disgusting" media for a week of distractions at a time when Republicans have urged him to focus on Democratic rival Hillary Clinton.

Donald Trump suggested that if Hillary Clinton gets to pick US federal judges as president, there is nothing that can be done to protect the right to bear arms.

Republican Donald Trump’s top aides and supporters yesterday downplayed a chaotic week in which the New York businessman was distracted from his core message by personal spats, as a new poll showed him trailing Democrat Hillary Clinton.

Hillary Clinton has told Democrats they have “just put the biggest crack in that glass ceiling” by nominating her for US president on a night awash with history.

Donald Trump's suggestion that the US might not come to the defence of Nato allies is another sign of his "lack of preparedness" on foreign policy, said US President Barack Obama.

Democrat Hillary Clinton was close to announcing a vice presidential running mate last night, with US senator Tim Kaine of Virginia leading a small group of contenders under consideration to help her do battle with Republican rival Donald Trump.

A night after being booed off the Republican National Convention stage, Texas Senator Ted Cruz remained defiant about Donald Trump, saying he is not a “servile puppy dog” and vowing not to support anyone who wages personal attacks against his family.

Republican presidential nominee, Donald Trump, has said that the United States, under his leadership, may not come to the defence of some Nato members, if Russia were to attack them.

Alarm and condemnation erupted from European capitals, the White House and leaders of Donald Trump's own party after the Republican presidential nominee suggested the United States might abandon its Nato military commitments if he were elected president.

It would take almost 14 days of eyes glued to the television to watch all the feel-good Hillary Clinton ads that have aired since the general election campaign began last month.

The US presidential race is tied going into the major parties’ national conventions and Democrat Hillary Clinton has been damaged by the FBI investigation into her email use while secretary of state, a new opinion poll showed.

Donald Trump is extremely unpopular among young adults, in particular young people of colour, and nearly two-thirds of Americans between the ages of 18 and 30 believe the presumptive Republican nominee is racist, according to a survey.

US presidential hopeful Donald Trump has appeared to raise questions about his likely rival Hillary Clinton's religious faith at a closed-door meeting with evangelical leaders.

Presumptive Democratic presidential nominee Hillary Clinton has said that Republican rival Donald Trump would send the US economy back into recession, warning his "reckless" approach would hurt workers still trying to recover from the 2008 economic turbulence.

Hillary Clinton is expected to celebrate becoming the first woman to lead a major American political party following votes in California, New Jersey and four other states.

Donald Trump supporters leaving the presidential candidate's rally in California clashed with protesters, some of whom threw punches and eggs.

US Democratic presidential contender Bernie Sanders easily won nominating contests in Alaska, Hawaii, and Washington, chipping away at front-runner Hillary Clinton’s commanding lead in the race to pick the party’s candidate for the White House.

US first lady Michelle Obama showed off her vocal chops at the South by Southwest Music Festival, but drew disappointed sighs when she told the crowd she has no plans to run for president.

Donald Trump is brandishing the endorsement of conservative Republican firebrand Sarah Palin in the increasingly intense 2016 GOP presidential sweepstakes, giving the billionaire businessman a boost against Texas Senator Ted Cruz less than two weeks before Iowa’s kick-off caucuses.

The firm that managed Hillary Clinton’s private email server said it has no knowledge that the server was “wiped”, according to reports.