Trump visits campaign volunteers in Iowa

Former President Donald Trump speaks to volunteers at Hotel Fort Des Moines in Des Moines, Iowa, on January 14. (Andrew Harnik/AP)

Former President Donald Trump made an unannounced stop this morning to visit campaign volunteers phone-banking for him at the Fort Des Moines hotel.

Trump spoke for nearly 20 minutes and thanked volunteers, according to the pool. He predicted a "tremendous" win in tomorrow's caucuses and urged supporters to get out and vote.

Asked about whether he was adding more events in New Hampshire because he was worried about former South Carolina Gov. Nikki Haley's rise in the polls there, Trump said he was not and touted his commanding lead over Haley and the rest of the GOP field.

Trump then unfurled an American flag overlooking the hotel lobby