Republican Rep. Doug Collins of Georgia is making a run for the Senate.<br />He faces stiff competition from Sen. Kelly Loeffler and Democratic challenger Rafael Warnock, who has a significant edge over both GOP candidates.<br />Now, Business Insider reports Collins has appointed Roger Stone as a campaign surrogate.<br />The longtime GOP operative--and ardent ally of President Donald Trump--will campaign for Collins next week.<br />Stone was imprisoned on charges of obstructing a congressional probe into 2016 election interference.<br />However, his prison sentence was commuted by Trump in July.