Former Florida governor Jeb Bush has dropped out of the Republican race for US president after failing to rank high in the first three state contests.
He came a distant fourth in Saturday's South Carolina vote, which was won by billionaire estate mogul Donald Trump.
"Today I am suspending my campaign," an emotional Mr Bush told his supporters.
Once a favourite mainstream candidate for the Republicans - and brother and son to two US presidents - Mr Bush saw his campaign flag in recent months.
I feel very sad about this. Jeb would have made a great president.
Shame on Marco Rubio for stabbing him in back by running against him. Rubio would be better than Trump or Cruz, but running against his former mentor shows he has more ambition than trustworthiness.