The Iowa Caucuses are tonight. FOX's Senior Political Analyst Brit Hume and FOX News Politics Editor Chris Stirewalt join the Rundown to preview the first contest of the 2020 presidential calendar and discuss who needs a good showing this evening to have any chance of securing the nomination.

After years of hype, over $50 million spent on ads and countless stump speeches, the Iowa Caucuses are finally here. Cary Covington, Associate Professor of Political Science at the University of Iowa, joins the Rundown to explain how the Caucuses work and why the nation's first voting contest is so important to the process.

Plus, commentary by Charlie Kirk Founder of Turning Point USA and author.