It was a bad night all round for Senator Ted Cruz.

Republican presidential front-runner Donald Trump is calling on rival John Kasich to get out of the White House race, arguing that the Ohio governor should not be allowed to collect future delegates because the nomination is already beyond his grasp.

The senator is a cause rather than just a candidate and thus has a real chance to beat Clinton, writes Robert L Borosage

US Democratic presidential contender Bernie Sanders easily won nominating contests in Alaska, Hawaii, and Washington, chipping away at front-runner Hillary Clinton’s commanding lead in the race to pick the party’s candidate for the White House.

Socialist Bernie Sanders has breathed new life into his long-shot White House bid with a crucial win in Michigan's presidential primary, chipping away at Hillary Clinton's dominance in the Democratic race.

Donald Trump has come under attack from former US presidential nominee Mitt Romney, who urged fellow Republicans to shun the property tycoon for the good of the country and party.

Former US president George Bush will be campaigning for his younger brother Jeb in South Carolina, marking his most direct entry into the 2016 White House race to date.

Rick Santorum, the conservative former senator who won nearly a dozen contests in the 2012 race for the Republican nomination, was due to suspend his latest and long-struggling run for the presidency last night.

Democratic and Republican presidential candidates across Iowa are scrambling for the first votes in the 2016 race for the White House, urging their supporters to take part in today’s caucuses in which outsiders Bernie Sanders and Donald Trump are pinning their hopes on a large turnout.

Michael Bloomberg, the billionaire former mayor of New York City, has told his aides to draw up plans for an independent campaign for the US presidency, according to a source familiar with the situation.

Donald Trump is brandishing the endorsement of conservative Republican firebrand Sarah Palin in the increasingly intense 2016 GOP presidential sweepstakes, giving the billionaire businessman a boost against Texas Senator Ted Cruz less than two weeks before Iowa’s kick-off caucuses.

Amid anti-immigrant rhetoric, it’s worth remembering some of the major candidates vying for the presidency are either the children or spouses of immigrants, writes Bette Browne

Donald Trump has made certain this election is no longer going to exclusively be about ‘the economy, stupid’, writes Bette Browne.

One cooks bacon with a machine gun — that’s Ted Cruz. 

The head of a white supremacist group, cited by the suspected gunman who killed nine people at a black South Carolina church last week, has given thousands of dollars to several 2016 Republican presidential candidates.

Senator Rand Paul, a favourite of the conservative tea party movement and frequent antagonist of leaders of his own Republican Party, has declared his candidacy for US president.

A US$1.1 trillion (€882.5m) spending Bill is on its way to US president Barack Obama for his signature.

The United States has moved closer to the possibility of the first-ever default on the government’s debt as Speaker John Boehner adamantly ruled out a House vote on a straightforward bill to boost the borrowing authority without concessions from President Barack Obama.