A graph visualizing the relationship between DW Nominate percentile and age in the 116th Congress (2019-2021)

These graphs show that in Arizona’s two largest counties, Democratic registration has outpaced Republican registration over the last three years. In Maricopa county, Democrats are narrowing the gap, and in Pima county, they are maintaining or slightly widening their registration lead.

Average sampled percentage gets closer to true percentage as sample size increases.