"Analysis conducted by Vanderbilt University political science professor Larry Bartels in 2004 and 2015 found income growth is faster and more equal under Democratic presidents. From 1982 through 2013, he found real incomes increased in the 20th and 40th percentiles of incomes under Democrats, while they fell under Republicans"

https://en.wikipedia.org/wiki/U.S._economic_performance_by_p...