Democratic candidates for the U.S. House carried all six reverse pivot counties in 2018. Reverse pivot counties are counties that voted for John McCain (R) in 2008, Mitt Romney (R) in 2012, and Hillary Clinton (R) in 2016.
The average margin of victory for 2018 U.S. House candidates in these counties was 11.05 percent. Cobb County, Georgia, had the lowest margin of victory with 7.18 percent and Henry County, Georgia, had the highest with 14.59 percent.
In five of the six counties, the Democratic U.S. House candidate had a larger margin of victory than Clinton did in 2016. Her average margin of victory in 2016 in these counties was 4.96 percent.
There are six reverse pivot counties in the country from four states: Orange County, California; Cobb County, Georgia; Gwinnett County, Georgia; Henry County, Georgia; Anne Arundel County, Maryland; and Fort Bend County, Texas. Their opposite, pivot counties, voted for Barack Obama twice and Donald Trump in 2016.