Anti-immigration conservatives are subjecting U.S. Sens. Jon Kyl and John McCain to blistering attacks over their pivotal role in the comprehensive immigration bill currently on life support in Congress. But if they get their way and the bill dies, so too may Republican electoral prospects for the foreseeable future.

Hispanic support for Republican candidates plummeted by 10 points, to 30 percent from 40 percent, between the 2004 presidential election to the 2006 congressional election debacle, costing the GOP as many as four congressional seats. In next year’s presidential election, Hispanic votes could make the difference in four Western states, including Arizona. If Republicans continue chasing Hispanic voters away, they can kiss their national electoral prospects goodbye.

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