Donald Trump, the Republican presidential candidate, will be hoping that unlike his performance in Iowa, he can convert a consistent poll performance into a victory at the New Hampshire primary. Photograph: David Goldman/ AP Photo

Voters cast their ballots in the first primary election in the US presidential race in New Hampshire on Tuesday. Coming eight days after the inaugur(...)

Republican presidential candidate Marco Rubio speaks at a town hall meeting in Londonderry, New Hampshire in advance of the second nominating contest. Photograph: Don Emmert/AFP/Getty Images

Republican White House hopefuls are entering the final 48 hours before the second nominating contest in New Hampshire, a make-or-break moment for sev(...)

“It’s time to end the very artful smear that you  have been carrying out.” Hillary Clinton and Bernie Sanders in New Hampshire. Photograph: Justin Sullivan/Getty Images

US presidential hopefuls campaigned hard in New Hampshire, the second state to vote on Tuesday, as Hillary Clinton looks to shake off an unconvincing(...)

 Viceland’s  Creative Director Spike Jonze with Balls Deep host Thomas Morton. (Photo by Jerod Harris/Getty Images for A+E Networks)

The launch of Viceland is near, and the trailer for Vice’s new 24-hour cable channel makes most other outlets’ programming look lame. The channel, (...)

A young supporter wears campaign stickers on her face as Democratic presidential candidate  Hillary Clinton speaks during a ‘get out to caucus’ event at Washington High School on January 30th in Cedar Rapids, Iowa. Photograph: Justin Sullivan/Getty Images
Iowa caucuses: how they work
  • US
  • February 1, 2016, 11:51

The battle for the US presidency shifts into a new gear with the start of states’ caucuses and primary elections in February 2016, beginning with the (...)

Donald Trump speaks during a campaign rally at Dubuque Airport in Iowa, on Saturday: the presidential candidate staged a fly-by in his red and black Boeing 757, dubbed “Trump Force One”, before landing. Photograph: Andrew Harrer/Bloomberg

Abraham Sheffield stands in a large function room of the University of Iowa’s university club, cradling his restless 16-week-old son as his other twin(...)

Residents of Flint, Michigan, including Wendi Browder, have their blood drawn to have free tests run to check for lead poisoning at the Masonic Temple in the city. Photograph: Brett Carlsen/Getty Images

In the 1850s, London, the world’s largest city, still didn’t have a sewer system. Waste simply flowed into the Thames, which was as disgusting as you (...)

 Pedestrians walk on Amsterdam Avenue on Sunday in New York city. Most of New York’s streets were cleaned up overnight after a huge snow storm hit the mid-Atlantic states. Photograph: Getty

New York city has slowly emerged from a massive blizzard that paralysed much of the US east coast, while snowy gridlock gripped the nation’s capital (...)

Pedestrians walk through the snowy streets in New York. Photograph:   Yana Paskova/Getty Images

New York lifted a travel ban and mass transit started getting back to normal on Sunday after a record-setting blizzard in the US Northeast, but Washin(...)

Cars covered in snow, parked along a street in Prince William County, Virginia. Photograph: Karen Bleier/AFP/Getty Images

A monster blizzard that has paralysed the US east coast intensified on Saturday afternoon as it barrelled into New York City, prompting a travel ban o(...)