Jeb Bush has received an endorsement from someone he was just running against.

FOX's Gurnal Scott reports:

Lindsey Graham described his own White House bid as "failed". But in endorsing Jeb Bush, he says he sees a leader on day one and Bush says he'll use Graham's advice and example to push on.

(Graham) "He ran because he wanted the voice of a strong national defense and the role of America in the world, the leadership role to be heard." 

Donald Trump reacted on Twitter to the endorsement saying Graham, who quit at zero percent, is backing a candidate with zero chance to win.

Gurnal Scott, FOX News.