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. Nikki Haley, the former U.N. ambassador and South Carolina governor, and Ron DeSantis, the Florida governor, remain locked in a close battle for second.
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