The first contest of the U.S. election season gets underway in just a few hours, with the start of the Iowa caucuses.

Presidential candidates have campaigned across the state for months, trying to win over voters and grab momentum early in the 2016 U.S. presidential race.

CCTV America’s Nathan King reports from Iowa.

The impact of US presidential candidates’ campaigning on US foreign policy
Rodney Loeppky spoke to CCTV America. Loeppky is an associate professor of political science at York University in Toronto.