The idea that  Trump could carry Republican hopes and lead the party of Abraham Lincoln into November’s election  is now a very real prospect. If he wins in the Iowa caucuses next Monday, it could be difficult to stop him. REUTERS/Scott Morgan

Cast your mind back seven months to that moment Donald Trump descended that escalator at Trump Tower into the presidential race to the strains of Neil(...)

Republican presidential candidate Ted Cruz campaigns at High Point Bulls Oswald Barn in Osceola, Iowa on Tuesday. Photograph: Jim lo Scalzo/EPA

Ted Cruz came to a cold hay barn on a farm in a remote part of a snowy Iowa to make his case to conservatives and evangelicals in a final push to win (...)

Hillary Clinton,  2016 Democratic presidential candidate, speaks during a Democratic Town Hall event in Des Moines in Iowa  on Monday. Photograph: Patrick Fallon/Bloomberg

US Democratic presidential candidate Hillary Clinton denounced another US company for relocating to Ireland through a “corporate inversion,” calling t(...)

Enda Kenny in Davos yesterday: the 90-minute debate on “rebooting the global economy” was not his natural territory, as the discussion delved into the nuances of labour patterns and emerging market developments. Photograph: Simon Dawson/Bloomberg

It was a case of back to school for Enda Kenny as he took his seat in the Alpine High School in Davos yesterday. It was a far cry from last year when (...)

Bob Dole (92) said nobody likes Ted Cruz. Photograph: Brendan Smialowski/Getty Images

It is a clear sign that the Republican establishment is concerned about conservative rabble-rouser Ted Cruz that they would believe that Donald Trump,(...)

A protester holds a sign up as immigrants and community leaders rally in front of the US Supreme Court in Washington in November to mark the first anniversary of President Barack Obama’s executive orders on immigration. Photograph: Kevin Lamarque/Reuters

The US Supreme Court has agreed to hear President Barack Obama’s appeal against a legal action blocking his executive actions protecting more than fou(...)

Investors look at computer screens showing stock information at a brokerage house in Fuyang, Anhui province

Chinese economic growth fell to 6.9 per cent in 2015, its lowest level in 25 years, matching expectations but adding to a picture of slowdown in the w(...)

If we could start from scratch perhaps most health economists would recommend single-payer, a Medicare-type programme covering everyone

Health reform is the signature achievement of the Obama presidency. It was the biggest expansion of the social safety net since Medicare was establish(...)

Hillary Clinton and Democratic rival Bernie Sanders debating in Charleston, South Carolina. Photograph: Timothy Clary/AFP/ Getty Images

It’s about evolution, not revolution; pragmatism, not idealism. This was Hillary Clinton’s message as she sought to depict socialist Bernie Sanders (...)

Democratic presidential candidate Hillary Clinton gestures as she walks on stage at a Democratic fundraising dinner featuring all three candidates in Las Vegas, Nevada. Photograph: Getty Images

After running as a man last time around, Hillary Clinton is now running as a woman. Matthew Dowd, the former George W Bush strategist who became an(...)