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(...)

Ted Cruz: trying to stop Donald Trump getting the 1,237 delegates needed to secure the Republican nomination in July. Photograph: Brendan Bannon/The New York Times

Republican US presidential hopeful Ted Cruz won all 14 delegates at stake on Saturday in Wyoming. Mr Cruz is trying to prevent Mr Trump from obtaini(...)

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 US presidential candidate Donald Trump greets supporters after a campaign rally in Albany, New York: the businessman told supporters the electoral system is “rigged, disgusting and dirty”. Photograph: Mike Segar/Reuters

Thousands queued in the cold rain in Albany, the state capital of New York, hoping to make it into the Bernie Sanders rally in the Washington Avenue A(...)

US Senator from Vermont and Democratic presidential candidate Bernie Sanders has won seven out of the last eight state-level Democratic nominating contests.  Photograph: Peter Foley/EPA

Bernie Sanders won the US presidential Democratic nominating contest in Wyoming on Saturday, besting rival Hillary Clinton and adding to a string of r(...)

Donald Trump: not since Barry Goldwater has the Republican establishment so railed against a candidate as it has against Trump. Photograph: Shannon Stapleton/Reuters

“I warned that the Republican Party is in real danger of subversion by a radical, well-financed, highly disciplined minority,” the Republican governor(...)

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 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(...)

The leak - Size of the leak: 2.6 TB - Number of documents: 11.5 million - Span of the data: 1977 to December 2015 (We’re taking into consider(...)