Lake has worked as a pollster for many prominent politicians. She has worked with Senator Barbara Mikulski, Senator Debbie Stabenow, Senator Blanche Lincoln, Senator Jon Tester, former Arizona Governor Janet Napolitano, former West Virginia Governor Bob Wise, Congressman Tim Walz, Houston mayor Annise Parker. She also served as a pollster to Massachusetts Attorney General Martha Coakley, whose loss she credited to "the failure of the White House and Congress to confront Wall Street." She also served as leader of focus group research for Bill Clinton's successful 1992 Presidential Campaign.
