President-elect Joe Biden flipped five states from red to blue this election — Michigan, Wisconsin, Arizona, and Pennsylvania — and is expected to flip Georgia, where he leads Trump. Out of the counties in these states that Hillary Clinton lost in 2016, Biden won only eight of them. While some red counties shifted to the left, larger margins of victory than Clinton in already-blue counties was the primary force that drove Biden to victory.
Biden didn't flip any counties in Georgia. In fact, the only Georgia county that flipped — Burke — voted Clinton in 2016, then Trump in 2020. Biden's projected win in the state was fueled by significant gains in already-blue counties, including Atlanta (Fulton County) and its suburbs.
Three Michigan counties flipped from red to blue. However, as in Georgia, the majority of Biden's gains came from larger vote margins in counties that also voted Democratic in 2016.
Biden won Dane and Milwaukee counties by far larger margins than Hillary Clinton, pushing him to victory in Wisconsin. Dane County is 真人百家家乐官网网站home to Madison, the second-largest city in Wisconsin.
With the exception of Maricopa County (Phoenix), Trump won all the Arizona counties that voted for him in 2016 by even greater margins in 2020. However, the combination of higher vote margins than Clinton in Tucson (Pima County) and Maricopa's flip from red to blue meant Biden still prevailed in the state. Biden won Maricopa with just over 50% of the vote, a large increase compared with Clinton's 45% in 2016.
Biden won by larger margins than Clinton in every county that voted for her except for Philadelphia, where he won by about 4,000 fewer votes than Democrats had in 2016. Two counties flipped from red to blue: Erie, in Pennsylvania's northwestern corner, and Northampton, in eastern Pennsylvania.
Mitchell Thorson, Kevin Crowe, Dian Zhang, and Dan Keemahill contributed to this report.