Prof. Jake Grumbach's work is cited in on the Opinion section of The New York Times,
"This fact pattern underscores a larger truth: The Republican Party is driving the nation’s democratic decline. A recent paper by Jacob M. Grumbach, a political scientist at the University of Washington, makes this plain. Using a new measure of state-level democratic performance in the United States from 2000 to 2018, Grumbach finds that Republican control of state government “consistently and profoundly reduces state democratic performance during this time period.” The nationalization of American politics and the coordination of parties across states means that “state governments controlled by the same party behave similarly when they take power.” Republican-controlled governments in states as different as Alabama and Wisconsin have “taken similar actions with respect to democratic institutions.”