McCain and Giuliani are sticking to positions that aren't in line with their base. The politics of conviction. John McCain likes being on the wrong side of his party, almost too much. At a town-hall meeting last week in New Hampshire—the state where he emerged as an unvarnished truth-teller in 2000—the Arizona senator went bare-knuckled with voters on an issue that threatens to cripple his campaign: immigration reform. McCain is proud to be a chief cosponsor of a reform bill, now stalled, that includes a path to citizenship for the nation's estimated 12 million illegal immigrants. But most of the...