Donald Trump: Senator Ted Cruz and Ohio governor John Kasich have agreed to standaside in certain states amid growing concerns that Trump cannot otherwise be stopped. Photograph: Shannon Stapleton/Reuters

Senator Ted Cruz and Ohio governor John Kasich have agreed to coordinate in future primary contests in a last-ditch effort to deny Donald Trump the R(...)

Headlines screaming ‘Deportations to begin’ and ‘Markets sink as trade war looms’ top a parody newspaper front page the Boston Globe on Saturday. Photograph: The Boston Globe/Twitter

Headlines screaming “Deportations to begin” and “Markets sink as trade war looms” top a parody newspaper front page the Boston Globe posted on Saturda(...)

Ted Cruz speaking at a rally in New York. The senator from Texas and candidate for the presidential nomination received an endorsement from former candidate Jeb Bush. Photograph: Reuters/Pearl Gabel

Texas senator Ted Cruz received a boost in his effort to rally Republicans behind his bid to beat Donald Trump in the Republican presidential race aft(...)

Republican would-be presidential candidate Donald Trump at Fountain Park, Arizona, during a campaign rally. Photograph: Ralph Freso/Getty Images

Most people would be upset to be at the centre of an agitated national debate about whether they were more like Hitler, Mussolini, Idi Amin, George Wa(...)

Donald Trump is topping polls, even though he repels many people. Photograph: Scott Olson/Getty

In November 2012, just as Barack Obama was beating Mitt Romney to be re-elected US president, betting opened on who would become president in 2016. Do(...)

Republican US presidential hopeful Ohio Governor John Kasich celebrates his Ohio primary victory. Photograph: AFP

After a critical win on his home turf, Ohio Governor John Kasich begins a new phase of his long-shot presidential campaign that his aides hope will ul(...)

US Speaker of the House Paul Ryan  outside the US Supreme Court  in Washington DC. File photograph: Kevin Lamarque/Reuters

When the speaker of the US House of Representatives Paul Ryan welcomes acting Taoiseach Enda Kenny and president Barack Obama at the St Patrick’s Day (...)

Democratic US presidential nomination candidate Bernie Sanders: “The people’s revolution that we’re talking about . . . is strong in every part of the country.”Photograph: Carlo Allegri

The latest multistate qualifying heats in the US presidential race showed again the Republican establishment can do little to halt front-runner Donald(...)

Democratic challenger Bernie Sanders scored a surprise win over frontrunner Hillary Clinton in Michigan while  Donald Trump made further advances in the race to be the Republican presidential nominee in November’s election with convincing primary ballot victories in Michigan and Mississippi last night. Photographs: Reuters, EPA

Democratic challenger Bernie Sanders scored a surprise win over frontrunner Hillary Clinton in Michigan, the biggest contest on the third day of multi(...)

Republican presidential candidate Donald Trump: “The most enjoyable thing about the Trump phenomenon has been watching him make monkeys out of a lot of people who had it coming.”   Photograph: Robert F Bukaty/AP

Here’s why the Trump campaign is wicked fun: I watched Donald Trump in New York for decades, as a bachelor swanning, a party fixture mingling, a maste(...)