Rubio's remarks to his supporters were excellent. This wasn't his time, but he will clearly have a place in the political future of the country. He's a good man who has a bright future.
If by "political future," you mean one strictly restricted to the state of Florida, then fine. Dog catcher would be my preference, but since I don't live there, I suppose his state's residents could stomach having him as governor for 4-8 years. But really, I'll be ok with whatever happens, just so long as he doesn't come within 2 miles of the White House.