A new CNN poll shows Rubio beating Hillary 49-48. The internals show him beating her 60-37 among whites. This is very much in line with the scenario I outlined yesterday, using 538.com’s election do-hickey, where the Republican wins with a 2% increase in support of whites, and a small decrease in black support. This is unpredictive, but useful. It’s a sign that the 538.com tool works as advertised.