In the increasingly crowded GOP primary field, there are three candidates who have something that all Republicans want, and few can claim: a plausible path to making a substantial connection with Hispanic voters. They are, or course, Florida Sen. Marco Rubio, Texas Sen. Ted Cruz, and former Florida Governor Jeb Bush. That won’t be easy, says University of Virginia political scientist Larry Sabato. “Hispanics lean heavily to the Democratic party in a polarized age when party identification matters greatly. Turnout may be the key for the GOP. Are Hispanics energized (2012) or not ene...