Ben Carson to tell his supporters there is 'no path' to Republican nomination

Ben Carson is to admit he has no chance of becoming the Republican presidential candidate - but will not actually quit the race.

The retired neurosurgeon will not take part in tomorrow night's debate between the remaining candidates, and will use a speech to supporters on Friday to admit that there is no 'path forward' for him.

But confusingly he is not yet expected to actually quit the race, the Washington Post reported.