Peltola made history in August when she became the first Alaska Native seated in Congress after she won the special election to replace longtime GOP Rep. Don Young, who died in March at the age of 88.
Shortly after news broke that she had won a full term on Wednesday night, Peltola tweeted "WE DID IT!!!"
Get Tri-state area news and weather forecasts to your inbox. Sign up for NBC New York newsletters.
For more on this story, go to NBC News.