Registered Voters by Party 2025

There are over 210 million registered voters in the United States. And among those voters are many different parties—from Democrats and Republicans to Independents and Libertarians.

While election results are easily accessible to the public, party affiliation is not.

Some states, Montana, for example, feel that that data should be protected and do not even ask registered voters to choose a party. This also means that they hold open primaries, allowing all registered voters to participate in the primary.

Republican Voters

The number of registered voters in each party will vary from year to year. Fortunately for everyone, the numbers for each of the parties remain fairly unchanged from one year to the next. That includes the number of voters for the Republican Party.

The number of registered voters for the Republican Party is approximately 38.8 million. And much like its opposing parties, these numbers are competitive when compared against the Independent and Democratic parties. Republican voters can also lay claim to having seven red states as of the last Presidential election.

Democratic Voters

The Democratic voters have historically held an edge over Republican voters, and recent data shows that this data is still holding true. The number of Democratic voters is reported to be around 49 million. The Dems also carried the lion’s share of registered voters in States that asked voters to declare affiliation, with 36 percent of voters declaring Democratic affiliation.

What might be most surprising about those figures is that the second-largest reporting party affiliation was the Independents, not the Republicans. That leads us to the next question regarding the number of registered voters by party.

Independent Voters

The number of people who identify with and declare themselves as Independent voters is second next to Democrats. What might be surprising to many people is that the overall number of people who claim affiliation with the Independent party is usually more than those who declare themselves as either Democrat or Republican.

The other impressive figure for those who declare as Independent voters is that 31 percent turn out for those states that asked for party affiliation declarations. This, of course, doesn’t mean there will be an Independent uprising, but it does reveal the balance among the parties.

Number of Registered Voters by Party

Although data such as the number of registered voters by party is important, it is also a volatile statistic. In addition to these numbers being in a state of constant flux, they also don’t necessarily determine the voting outcome for these voters.

From the Republicans to the Democrats to the Independent voters, the number of registered voters by party is important. On election day, however, is when those affiliations prove their worth.

The data below was pulled from each of the states that collect and display party data. While all states count their overall registered voters, 19 states do not collect or display party-related numbers.