Methodology
1. Focus Groups
GSG and GHY conducted two focus groups in Oak Creek, Wisconsin on January 26th, two in Southfield, Michigan on January 28th, and two in Tampa, Florida on January 29th, 2017. In each set of groups, one group was conducted with Obama-Trump voters and one with turnout targets (millennials in WI & FL and African American voters in MI who voted for Obama but did not vote in 2016).
2. Obama- Trump Survey
GSG and GHY conducted a survey of 801 registered voters who voted for Donald Trump in 2016 and Barack Obama in 2012 from January 31st to February 4th, 2017.
3. Drop-off Voter Survey
GSG and GHY conducted a survey of 803 registered voters nationwide from March 31st to April 5th, 2017, conducting interviews with 401 midterm drop-off voters (voted for Clinton in 2016 but did not vote in 2014) and 402 presidential drop-off voters (voted for Obama in 2012 but did not vote in 2016).
– Washington Post