Trump is telling Rubio to quit. Trump is doing this because he doesn't want him on the debate stage and he's scared of Rubio.
No one is afraid of little marco.

Hell Trump should want him to stay in but Trump is confident he can kick Cruz's ass in a one on one race.. its a risk but be interesting to see what happens.Now you get back to work getting your jew buddy bloomberg ready to run! LOL
Of course Trump is afraid of Rubio.
Rubio is the only one who has stood up to Trump, and made the know-nothing bully look like an idiot on stage. Not that he needs much help.
His mockery of Trump has been devastating. Trump has been underperforming his polls since Rubio took him on.
Rubio has fallen on his sword for the party to stop the horrendous Trump, and Ted Cruz has him to thank.