Mary Peltola, the first Alaska Native elected to Congress, is sworn in

Peltola fills the remainder of former Representative Don Young's term, and must run for re-election in November.

Mary Peltola, a Democratic former state lawmaker, who won a special election to fill Alaska’s sole U.S. House of Representatives seat, was sworn into office Tuesday, becoming the first Alaska Native to represent the state in Congress.

She defeated Republican former Governor Sarah Palin by 51.47 percent to 48.53 percent. Palin is widely known for her unsuccessful vice presidential run with John McCain in 2008.

Peltola will finish the remainder of the term of Republican Representative Don Young, who died earlier this year, and will face re-election on Nov. 8.

[Mary Peltola becomes first Alaska Native in Congress after winning special election]

She is the first Alaska Native to represent a state where almost 20 percent of the population is Indigenous, the highest proportion in the United States.

Palin’s campaign for the House seat was her first run for public office after the McCain loss. She is seen as having helped open the door to a more far-right wing of the Republican Party.

During her campaign, Peltola ran as “Alaska’s best shot at keeping an extremist from winning,” according to her campaign website. She highlighted her status as “the only candidate in this race who isn’t a multi-millionaire.”

The election is the first one run under the state’s new ranked-choice system, with voters listing candidates in order of preference on the ballot. A candidate must clear 50 percent of the vote to be declared the winner.