DES MOINES, Iowa — Campaign events are falling as swiftly as the Iowa snow as wintry weather hampers both Nikki Haley and Ron DeSantis as they clamor for support in the days before Monday’s leadoff presidential caucuses.

       Prolonged freezing temperatures, combined with strong winds, foreshadow possibly life-threatening conditions on the night that Republican voters are set to gather to make their pick for their 2024 nominee.

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       Iowans are accustomed to the cold, though the latest winter wave, combined with temperatures that threaten to dip deeper into negative territory in the coming days, could mean unprecedented conditions for caucus night itself. Early into next week, forecasters said significant winds would make things feel as cold as 45 degrees below zero, a record-breaking forecast that could keep potential voters at home.