For 20 years, he has provided winning research and strategic advice to Democratic candidates across the country. His list of victories includes Sen. Chuck Schumer’s defeat of Sen. Alfonse D’Amato in 1998, Gov. Jennifer Granholm in 2002 and 2006, and Delaware Congressman John Carney in 2010. Di Resta is also an adjunct professor at George Washington University where he lectures on opposition research.