At our website, Breitbart News, we have about 20 million readers most of them are grassroots conservative voters, and some of them are very loyal, and their number one issue has consistently been since last year, immigration. And they're looking for someone who's going to seal the border, and prioritize border security as number one, unlike the people who are outside

Breitbart's Marlow: Immigration Is 'Number One' With Grassroots, Trump 'Growing Big Tent' (September 14, 2015)