After Lyndon Johnson's victory over Barry Goldwater in the 1964 U.S. presidential election, the once-mighty Republican Party was reduced to a regional rump. The Democrats won overwhelming majorities in the House and the Senate, which they used to pass Johnson's Great Society legislation. Republicans, meanwhile, were at one another's throats, having endured the most divisive campaign in modern political history. Goldwater had managed to win the Republican presidential nomination over the impassioned opposition of moderate and progressive Republicans, who at the time may well have constituted a majority of the party's members. Moderates blamed Goldwater's right-wing views for the defection of millions of Republican voters.