Koch brothers go head to head with Trump

U.S. President Donald Trump acknowledges the crowd during the Make America Great Again Rally at the Florida State Fairgrounds in Tampa, Florida, U.S., July 31, 2018.   REUTERS/Carlos Barria - RC1F9636C950

Senior Fellow Elaine Kamarck analyzes the Koch brothers’ decision to pull funding from several Republican candidates in the upcoming midterm elections over disagreements on several policy issues. She explains that the rift in the GOP has been growing for much of the last two years and, as a result, the Republican base has been shrinking.

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