New York could also inject a new momentum behind the leader in the Republican race, businessman Donald Trump, in his bid to be the party’s nominee. He has 744 delegates to 559 for Texas senator Ted Cruz. Photograph: Christopher Lee/The New York Times

The second-biggest prize in the Democratic presidential election – and the fourth-biggest in the Republican race – will be up for grabs when primary v(...)

Young Bernie Sanders supporters hold Bernie posters before the campaign rally at Washington Square Park in New York on Wednesday night.  Photograph: Peter Foley/EPA

Thousands of Bernie Sanders’s supporters descended on Washington Square Park in Manhattan on Wednesday evening, bringing even more colour and energy t(...)

Steven Avery: charged with murdering 25-year-old Teresa Halbach.

Laura Ricciardi and Moira Demos, the creators of Making a Murderer, have warned that the number of wrongful convictions in the US is rising. They sp(...)

Hillary  Clinton’s support of the Panama trade deal, which Bernie  Sanders (above) challenged in the US senate, was one reason why she should not be the Democratic Party’s nominee for president, he said. Photograph: Mark Makela/The New York Times

Democratic presidential candidate Bernie Sanders has tied Hillary Clinton to the Panama Papers, claiming that her past support of the Panama free tra(...)

Ted Cruz embracing his wife Heidi Cruz during a campaign event in Milwaukee, Wisconsin, on Tuesday. He won 36 of the 42 nominee-choosing delegates in Wisconsin’s Republican primary. Photograph: Daniel Acker/Bloomberg

Wisconsin, the US state famous for its cheese making, put a wall of hard cheddar in Donald Trump’s path to the Republican presidential nomination, but(...)

Ted Cruz and Bernie Sanders have defeated Donald Trump and Hillary Clinton in the Wisconsin presidential primary elections. Photograph: Jim Lo Scalzo/Katherine Taylor/EPA

Bernie Sanders and Ted Cruz won their Wisconsin presidential primary elections, prolonging the Democratic race and increasing the chances that the Rep(...)

Republican presidential candidate Donald Trump. Photograph: Paul Sancya/AP Photo

The number of nominee-picking delegates to be won on Tuesday in Wisconsin may not be huge, but the momentum will prove crucial to determining how long(...)

Holding a poster of Ted Cruz ahead of the primaries. Photograph: Joshua Lott/The New York Times

Republican presidential contenders Donald Trump and Ted Cruz urged struggling candidate, Ohio governor John Kasich, to drop out as they made final app(...)

Republican presidential candidate Donald Trump speaks to guests during a campaign rally at the Radisson Paper Valley Hotel in Appleton, Wisconsin. The state’s  voters go to the polls for the Republican  primary on Tuesday. Photograph: Scott Olson/Getty Images

This week was the first since the inaugural qualifying round of the US presidential election in Iowa on February 1st that there hasn’t been primary or(...)

Whither Wisconsin?: Republican presidential candidate Donald Trump looks to supporters as he leaves a campaign stop yesterday, in Appleton, Wisconsin. Photograph: Nam Y Huh/AP

The danger signs are mounting for Donald Trump in Wisconsin: right-wing radio hosts are flaying him, governor Scott Walker and other elected Republica(...)