Analysis: Iowa’s most important poll has set the expectations for the GOP caucuses

​ Former President Donald Trump looks to be on the verge of a historic victory in the Iowa caucuses. The final poll from Iowa’s premier pollster, Ann Selzer, has Trump at 48% followed by former South Carolina Gov. Nikki Haley at 20% and Florida Gov. Ron DeSantis at 16%. Read More Breaking News, Latest News and Videos | CNN