A lot of pundits -- and antsy Republicans -- keep suggesting that there is a "ceiling" to Donald Trump's support, meaning that he will be contained eventually. The problem is that this "ceiling" may be as high as the support of his two leading rivals -- combined.
That, at least, is what happened Tuesday night in Nevada, stunning the political world. Trump won 45.9 percent of the vote, while Marco Rubio came in a distant second with 23.9 percent and Ted Cruz earned 21.4 percent.
The entrance polls suggest that Trump won among a whole lot of voter groups that he isn't "supposed to" be winning and indeed are "supposed to" be ripe for Rubio's picking:
-- Trump beat Rubio by nine points among voters aged 17-44 (though Rubio won among the more narrow 17-29 group).
-- Trump beat Rubio not only among blue collar voters (Trump's base) but also beat him by double digits among college graduates.
-- Trump beat Rubio among Latinos and nonwhites overall.