What is the total number of registered voters in the US by year?

The total number of registered voters in the U.S. has varied over the years. As of the 2020 election, there were approximately 158 million registered voters. This number has generally increased since the 1980s, reflecting population growth and changes in voter registration laws. For specific year-by-year data, the U.S. Census Bureau and the Federal Election Commission provide detailed statistics.