Sexual allegations are not new in US presidential politics, but Ryle Dwyer notes that Donald Trump has plumbed a new low.

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.

Several hundred Donald Trump supporters — a few of them openly carrying guns as allowed under Ohio law — gathered for the first major pro-Trump rally of the four-day Republican National Convention.

Hollywood stars and political leaders have angrily described the decision to pull a film about the assassination of the North Korean leader as a defeat for free speech.

US House Majority Leader Eric Cantor of Virginia lost to a Tea Party challenger in a stunning Republican primary upset that sent shockwaves through Congress and gave the conservative movement a landmark victory.

The political stalemate that partially shut down the US government has worsened with Democrats rejecting the latest Republican effort to negotiate over efforts to derail the health care overhaul.

Republicans reeling from their second presidential loss in a row engaged in some soul-searching but were at odds on how far the party must change to remake its image.

MITT Romney did what he needed to do in last week’s US presidential debate.

OUT of the ring for four years and off form, a tired US President Barack Obama lost last Wednesday night’s debate to republican nominee Mitt Romney.

Mitt Romney has clinched the Republican presidential nomination with a win in the Texas primary.

Mitt Romney is poised to clinch the Republican presidential nomination after today’s Texas primary, a largely uncontested election which will formalise the former Massachusetts governor’s status as President Barack Obama’s general election challenger.

Mitt Romney’s foreign policy vacillation typifies how the Republican Party has struggled to keep up with developments, says Leslie H Gelb

Republican candidate Newt Gingrich has officially announced that his campaign for his party's US Presidential nomination is over.

Newt Gingrich is planning to officially end his campaign for the US Republican presidential nomination with an announcement in Arlington, Virginia, today.

President Barack Obama poked fun at his likely presidential rival Mitt Romney and Republican opponents in Congress, including a dig at Romney’s treatment of a pet dog, at the annual White House Correspondents’ Association dinner.

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

With the Republican presidential nomination all but in hand, Mitt Romney is refocusing his efforts on challenging President Barack Obama, raising cash for what may be the most expensive presidential contests in American history.

Mitt Romney’s path to becoming Republican presidential candidate has cleared further with advisers to rival Newt Gingrich saying he will formally end his campaign next week.

Mitt Romney has laid claim to a fiercely-contested Republican presidential nomination by sweeping five primary contests.

AT FIRST there was near unanimity of outrage and dismay.

Mitt Romney, freed of his last serious challenger for the Republican presidential nomination, has unleashed blistering attacks on Barack Obama, assuring a brutal tone for the coming election campaign.

Rick Santorum dropped out of the race for the US Republican presidential nomination, leaving the field clear for Mitt Romney as the party’s likely choice to challenge President Barack Obama.

Bowing to the inevitable, Rick Santorum quit the US presidential campaign last night, clearing the way for Mitt Romney to claim the Republican nomination.

Bowing to the inevitable, Rick Santorum quit the presidential campaign today, clearing the way for Mitt Romney to claim the Republican nomination.

Mitt Romney is turning away from his primary opponents and towards Democratic President Barack Obama after sweeping three more Republican contests.

Republican front-runner Mitt Romney and president Barack Obama are trading blows as though the former Massachusetts governor has already locked up his party's nomination.

Mitt Romney tightened his grip on the Republican presidential nomination, sweeping three primaries in Wisconsin, Maryland and Washington, DC, and urged his party to shift focus to the general election showdown with President Barack Obama.

Mitt Romney charged toward the Republican US presidential nomination last night, aiming for big victories in Wisconsin and two other contests that would increase the pressure on rival Rick Santorum to drop out of the race.

Mitt Romney looked with confidence toward a victory in three more primary elections today and has increasingly turned his rhetorical fire on president Barack Obama, saying he relies on Europe for political inspiration.

US Republican presidential candidate Mitt Romney focused entirely on Democratic President Barack Obama during a campaign trip ahead of the Wisconsin primary, and predicted a victory that could effectively seal the nomination for him next week.

Newt Gingrich has laid off a number of staff members in a last-ditch effort to take his presidential campaign to the Republican convention.

Rick Santorum attacked rival Mitt Romney calling him “the worst Republican in the country to put up against Barack Obama” even as it appears the former Massachusetts governor is on course to clinch the Republican party’s nomination.

Rick Santorum won the Louisiana Republican presidential primary, beating front-runner Mitt Romney in the race to challenge President Barack Obama.

Mitt Romney easily won the Republican presidential primary in Illinois, increasing his already-formidable lead over chief rival Rick Santorum with another victory in a key industrial state.

The heartland state of Illinois is the next test today in the Republican party’s presidential nominating contest and one that would seem tailor-made for moderate front-runner Mitt Romney.

Rick Santorum has lambasted Mitt Romney, calling him a flawed candidate and asking for a one-on-one debate with the former Massachusetts governor.

Rick Santorum won crucial primaries in Alabama and Mississippi in the race for the Republican presidential nomination, dealing a devastating blow to Newt Gingrich and securing his position as the chief conservative alternative to front-runner Mitt Romney.

Mitt Romney is hoping for a breakout victory in primary votes in America’s conservative deep South, looking for a win in Alabama or Mississippi that would accelerate his campaign for the Republican nomination.

Republican candidates battled hard ahead of today’s key deep South votes as a poll said front-runner Mitt Romney would beat Democrat President Barack Obama if elections were held right now.