Kyrsten Sinema on Monday was declared the winner of a hard-fought House race, becoming the first openly bisexual member of Congress.

“We've made history, and we're proud of that, but what I am interested in is making history by making things better for the people of Arizona's 9th Congressional District,” Sinema told ABC News.

Sinema is the seventh openly LGBT congressional candidate to win on Election Day. An eighth candidate, Richard Tisei, lost his bid to become the House's first openly gay Republican. Massachusetts voters decided instead to return Representative John Tierney to Congress.

(Related: Six openly gay candidates elected to Congress; seventh leading.)

The 36-year-old Sinema held a slim lead over her Republican rival, Vernon Parker on Election Night. On Monday, the AP announced her the winner with a 6,000 vote lead.

Arizona's newly formed 9th Congressional District includes portions of downtown Phoenix. The district includes a large share of independents.

“This district is a very young district. We'll always be competitive. Folks will be making decisions on who has the best ideas,” she said.