State Sen. Barbara Cegavske is running for Nevada’s new 4th district.

Cegavske, who is in her third state Senate term after serving three terms in the state Assembly, has filed with the Federal Election Commission but will hold off on a formal announcement until January, when she will visit the seven counties in the district.

Located in North Las Vegas and several rural counties north of the city, the 4th district was added in reapportionment. Its lines were drawn by court-appointed special masters, and the district favors Democrats.

Democrats hold a 13-point voter registration edge in the 4th district. President Barack Obama would have won it in 2008 with 56 percent, and it has 23 percent Latino and 14 percent African-American voting-age populations.

Cegavske is the only Republican in the race so far. State Sen. Steven Horsford is the favorite to win the Democratic nomination, but he has a primary with state Sen. John Lee.