Former President Donald Trump holds a 23-point lead over Gov. Ron DeSantis (R-FL) and the rest of the Republican caucus field in Iowa, according to a poll. The poll, conducted by J. Ann Selzer on behalf of NBC News, the Des Moines Register, and Mediacom, shows that 42 percent of Iowa caucusgoers back Trump for the nomination. DeSantis holds 19 percent support, as he sits ten points ahead of Sen. Tim Scott (R-SC) with nine percent of backing. From there, former Vice President Mike Pence and former Gov. Nikki Haley (R-SC) tie at six percent, followed by former Gov. Chris...