eric cantor losing his primary to a little known conservative challenger, economics professor david brat. >> it's disappointing, sure. but i believe in this country. i believe there's opportunity around the next corner for all of us. >> reporter: the number two republican in the house was widely considered and preparing to be the next speaker of the house following john boehner. >> hi, i'm david brat. i'm running for the united states congress. >> reporter: even brat himself told cnn he didn't think he would pull off a win with a war chest of only 300,000 compared to cantor's $5 million. cantor learned firsthand that money doesn't buy enthusiasm and the grass roots in his virginia district were determined to take the establishment republican down. >> eric cantor is trying to buy this election with corporate cash from los angeles to new york. he's acting as a conservative in public while working behind the scenes to deliver open borders for large corporations. >> reporter: brat's main case against cantor was support for