The phrase "registered voters" refers to people who have officially signed up or registered with the government to be qualified to vote in elections. Full definition
In order to qualify for public financing, candidates must collect signatures and $ 5 contributions from 1 percent of registered voters in the city. (ballotpedia.org)
The number of registered voters in turn determines the shape of parliamentary constituencies. (theguardian.com)
The race is wider among registered voters in the state including those who are undecided yet leaning toward a candidate. (maristpoll.marist.edu)