With just one day to go until Iowa’s presidential caucuses, the candidates are urging their supporters to brave bone-chilling cold and blustery wind to help carry them through Republicans’ leadoff voting contest. The final Des Moines Register/NBC News poll before Monday night’s caucuses found former President Donald Trump maintaining a formidable lead, supported by nearly half of likely caucusgoers. Former U.N. Ambassador Nikki Haley and Florida Gov. Ron DeSantis remain locked in a close battle for second. The three candidates fanned out across Iowa on Sunday to meet with vot...