Republican Chris Christie ends bid for the White House

Republican Chris Christie has dropped out of the US presidential race after a disappointing finish in New Hampshire.

The New Jersey governor spent heavily and campaigned the longest in the state but still came in sixth place.
He was praised for his debate performances and was credited with blunting the momentum of Marco Rubio.
Mr Christie joins former tech executive Carly Fiorina who also left the race after struggling in Iowa and New Hampshire.