After Goldwater carried only southern states and received a record low of 7 percent of the black vote, the party faced a basic choice: do what was necessary to appeal to more nonwhite voters, or build a party to win with white voters. It chose the latter, and when most successfully executed, a race-based strategy was the foundation of many of the Republican Party’s biggest victories, from Nixon to Trump. And fittingly, absent serious change, race will define the demise of the Republican Party to a regional, Sunbelt-based party.