Republican Donald Trump says he’s not vacillating when it comes to his proposal to deport the estimated 11 million people living in the US illegally — even though his new campaign manager now says his stance is “to be determined”.

Donald Trump’s campaign expenses more than doubled last month, even as the Republican presidential nominee held his payroll to about 70 employees, aired zero television advertisements, and undertook no significant operational buildout across the country.

Dissident delegates making a last-ditch attempt to prevent Donald Trump's US presidential candidacy at the Republican National Convention say they will try forcing a state-by-state vote on the rules governing the gathering.

Donald Trump has railed against some Republicans planning a last-ditch effort to thwart him from becoming the party's presidential nominee, threatening at one point to stop fundraising if the party does not rally around him.

Republican Donald Trump and Democrat Hillary Clinton scored sweeping victories in nominating contests in their home state of New York, and immediately cited those wins to argue that they are all but unstoppable as their respective parties’ presidential nominees.

An aide to House Speaker Paul Ryan says the Wisconsin Republican will formally rule running for president this year.

Republican presidential front-runner Donald Trump is calling on rival John Kasich to get out of the White House race, arguing that the Ohio governor should not be allowed to collect future delegates because the nomination is already beyond his grasp.

Republican presidential candidates, Donald Trump and Ben Carson, are threatening to boycott the next GOP debate because of its proposed format. This is a rare political alliance between the leading outsider candidates.

Caving to intense Republican lobbying, presidential candidate Donald Trump has ruled out an independent White House bid and has vowed to support whomever wins the party’s nomination — a U-turn eased by his position at the front of the field.

Donald Trump, the man to beat in tonight’s first televised Republican presidential debate, said he does not plan to attack his rivals and downplayed expectations for his performance, saying “I’m not a debater.”

Some Republicans gleefully scripted Donald Trump’s political obituary in the wake of his scathing comments about Senator John McCain’s military service earlier this month, hoping that his freewheeling presidential campaign had finally imploded.

Mitt Romney’s declaration that he is considering a third shot at the White House after being a two-time Republican presidential loser was widely greeted with disdain at a national gathering of Republican activists.

Mitt Romney, the 2012 Republican presidential nominee, will address a gathering of Republicans in California today that will mark his first public comments since making it known that he may run again in 2016.

Hillary Clinton’s family was "dead broke" and saddled with legal bills when she and her husband left the White House, the former first lady said at the start of a high-profile book tour that could precede a 2016 presidential campaign.

Former US secretary of state Hillary Rodham Clinton said she feels “emboldened” to run for the presidency because of Republican criticism of her handling of the deadly 2012 terrorist attacks in Libya.

Two television projects focused on Hillary Clinton got the axe after the programmes became embroiled in partisan wrangling, including threats by the Republican National Committee to boycott presidential debates sponsored by CNN and NBC.

Faced with a trio of controversies, President Barack Obama is trying to halt a perception spreading among both White House opponents and allies that he has been passive and disengaged as unexpected developments consume his second term.

President Barack Obama and his Democratic allies scored a financial victory in August over Republican challenger Mitt Romney and his backers, as Romney’s team hit snags in the money race.

Republicans bestowed their presidential nomination on Mitt Romney, turning to the former Massachusetts governor and multi-millionaire businessman to drive Barack Obama from the White House and usher in a new era of small-government conservatism.

Republican National Committee officials are releasing a three-day schedule for the party’s national convention, shortened because of Tropical Storm Isaac.

Clint Eastwood made quite a splash when he starred in a Super Bowl commercial last February that talked about “half-time in America”.

US President Barack Obama has used the first official rally of his re-election bid to brand Republican rival Mitt Romney as a willing rubber-stamp for failed policies championed by extreme House Republicans.

Four years on, “Hope and Change” has become “Forward”, as President Barack Obama road tests a new campaign slogan to encapsulate his re-election bid.

Barack Obama will headline his first re-election rallies next week.

Mitt Romney faces a daunting to-do list as he transitions into the role of likely Republican presidential nominee.

President Barack Obama would win in a match-up against the two leading Republican presidential candidates Mitt Romney and Newt Gingrich, a new poll shows.

US PRESIDENT Barack Obama channelled President Theodore Roosevelt last night, embracing a mantle of economic fairness for the nation’s middle class that drew parallels to the progressive reformer’s calls for a “square deal” for regular Americans more than a century ago.

The Republican Party’s search for a challenger in the 2012 presidential race seems stranger by the day.

American voters went to the polls today with Republicans poised to strip Democrats of their hold on power in Congress and reshape the political landscape nationwide.

Angry American voters were poised to deliver a heavy blow today to President Barack Obama’s Democrats in elections likely to cost the party control of at least one chamber of Congress.

Feverish campaigning today marked the final run up to the US congressional elections that are expected to strip Democrats of their Washington power base tomorrow.

REPUBLICANS won two key state elections, dealing a stinging blow to President Barack Obama and his Democrats 12 months after they swept to power.

A TOP South Carolina Republican leader says philandering South Carolina governor Mark Sanford should resign and practise the philosophy he’s preached of holding GOP leaders accountable.

The Republican Party chose its first black national chairman, just shy of three months after the nation elected a Democrat as the first black president.

US President-elect Barack Obama promised the voters change but has started selecting his inner circle by appointing existing Washington insiders to top posts.

Defeated US presidential candidate John McCain defended his running mate Sarah Palin today, denying that she damaged his White House bid and dismissing criticism of her as campaign sniping.