Kelda Helen Roys, executive director of NARAL Pro-Choice Wisconsin, won a crowded Democratic primary for the 81st Assembly District on Tuesday and won't face opposition in the November general election.

Roys' victory puts her in position to replace the retiring Rep. David Travis, D-Waunakee, who has held the seat covering north Madison, Waunakee, Westport and other parts of northern Dane County since 1978.

No Republican or other candidate has registered to run for the seat. Roys defeated five other Democrats in the primary.

In other area Assembly primary races:

• Democrat John Waelti, a former rural economics professor from Monroe, won the Democratic primary and will challenge Rep. Brett Davis, R-Oregon, in the 80th District.

• Kathy Maves, an office manager from Oregon, won the GOP primary in the 46th District and will challenge Rep. Gary Hebl, D-Sun Prairie.

• Democrat Trish O'Neil of Columbus, a nurse and school board president, won her party's primary in the 47th District, and Keith Ripp, a Lodi farmer and business owner, won the Republican primary. Independent Dennis Hruby. of Dane. is also seeking to replace Rep. Gene Hahn, R-Cambria, who is retiring.

• Travis Tranel, a Grant County farmer, won the GOP primary in the 49th District and will challenge Rep. Phil Garthwaite, D-Dickeyville.

• Kent Koebke, an economics teacher and former Marine from Fort Atkinson, won the GOP primary in the 37th District and will challenge Rep. Andy Jorgensen, D-Fort Atkinson.

There were no contested primaries in local state senate races.

The primary results set the stage for the Nov. 4 general election in which Democrats are expected to make a play for control of the Assembly while maintaining a majority in the Senate.

Republicans hold a 51-47 margin in the Assembly, with one independent, while Democrats control the Senate, 17-14, with two vacancies.

In races for the U.S. House of Representatives, Marge Krupp, a chemical engineer from Pleasant Prairie, was leading the Democratic race in the 1st Congressional District late Tuesday, and Kevin Barrett of Lone Rock, a controversial former lecturer at UW-Madison, was leading the Libertarian primary in the 3rd Congressional District.

The Associated Press contributed to this report.