How can I watch CNN's Iowa caucuses coverage? Iowa Republican caucusgoers will vote by secret ballot, not by standing up in different groups like Iowa Democratic caucusgoers. Hillary Clinton won the 2016 Democratic Iowa caucuses by a razor-thin margin over Vermont Sen. Bernie Sanders. Texas Republican Sen. Ted Cruz won the Republican Iowa caucuses, but now-President Donald Trump ultimately became the party's nominee. The Republican Party of Iowa and the Iowa Democratic Party run and organize their own caucuses.

Source: CNN February 03, 2020 17:21 UTC