The Kaiser Family Foundation and Cook Political Report have embarked on a new project examining the attitudes and experiences of voters in several key battleground states leading up the 2020 presidential election. The Blue Wall Voices Project is a unique state-based polling project that relies on an innovative probability-based approach to conducting public opinion polls using a combination of telephone and online methodologies. Drawing from voter registration lists, KFF and Cook Political Report have conducted interviews with 3,222 voters in the four states constituting the “Democratic Blue Wall” – the area in the Upper Midwest that was previously considered a Democratic stronghold, and where state polls performed poorly in 2016 and underestimated support for President Trump. The data analyzed is from 767 voters in Michigan, 958 voters in Minnesota, 752 voters in Pennsylvania, and 745 voters in Wisconsin. For more details, please see the methodology section of this report.