US Republican presidential candidate Donald Trump:  He leads in state primaries and caucuses   so far,  but the odds of the businessman reaching the majority of 1,237 pledged delegates to clinch the nomination in the first ballot at the national convention in July have declined. Photograph: Carlo Allegri/Reuters

Republican presidential frontrunner Donald Trump has raised more hackles about the party’s nominating process, saying that the party’s leaders do not(...)

Republican presidential candidate Donald Trump speaking on “Super Tuesday”  night in Palm Beach, Florida. Photograph: AP Photo/Andrew Harnik

Former Republican presidential nominee Mitt Romney will deliver a speech today laying out his case against Donald Trump, despite the billionaire’s sw(...)

Donald Trump exits the stage after speaking during a Super Tuesday night event in Palm Beach, Florida. Photograph: Luke Sharrett/Bloomberg

The biggest day of the US presidential battle led to the victories for Donald Trump and Hillary Clinton but four state wins for Bernie Sanders, three (...)

Republican US presidential candidate Donald Trump (L)  and Democratic US presidential candidate Hillary Clinton (R) rolled up a series of wins on Tuesday. Photograh: Scott Audette/ Javier Galeano/Reuters

Donald Trump and Hillary Clinton scored major wins on the biggest night of the US presidential election so far, extending their leads in the races to (...)

A man looks on as he waits for Republican US presidential candidate Donald Trump to speak at a campaign rally on Super Tuesday in Columbus, Ohio March 1st. Photograph: Aaron Josefczyk/Reuters

Voters in 12 US states go to the polls on Tuesday as Donald Trump and Hillary Clinton, who have had the most success in the early nominating contests,(...)

A fan   during a campaign rally for Republican frontrunner Donald Trump. Photographer: Andrew Harrer/Bloomberg

1 DEMOCRATIC RACE: NORTH V SOUTH Two states to watch in the Super Tuesday Democratic race between front-runner Hillary Clinton and Vermont senator(...)

Hillary Clinton:  “firewall” of southern minority voters held strong against Bernie Sanders. Photograph: Gerald Herbert/AP Photo

After two narrow wins and one heavy defeat in the early nominating states, Hillary Clinton banked her first landslide victory, in South Carolina’s pr(...)

Republican presidential candidate Donald Trump, flanked by sons Donald jnr and Eric, at a rally after winning the Nevada caucus on Tuesday. Photograph: David Paul Morris/Bloomberg

When billionaire Donald Trump, fast becoming the US answer to Silvio Berlusconi, took to a Vegas stage for his third primary victory party in a row on(...)

Donald Trump gives a victory speech at the Treasure Island Resort and Casino in Las Vegas after winning Nevada’s Republican presidential caucus. Photograph: Ruth Fremson/The New York Times

Billionaire outsider Donald Trump has won the Nevada caucuses, earning his third straight victory in the race to be the Republican nominee in November(...)

An Arkansas couple’s evening of ‘kinky’ entertainment ended with one pair of handcuffs used for fun being replaced by another used for real in an arrest, US police reported. File photograph: Getty Images

An Arkansas couple’s evening of “kinky” entertainment ended with one pair of handcuffs used for fun being replaced by another used for real in an arre(...)