Representative Lauren Boebert, a polarizing figure aligned with MAGA ideals, successfully navigated a competitive Republican primary on Tuesday by switching districts in Colorado. This strategic move secures her position in Congress for another two-year term.

Ms. Boebert, now in her second term as a Republican, emerged victorious against several contenders in Colorado’s conservative eastern plains. With her substantial lead, she is poised to win over her Democratic opponent in November in the strongly Republican Fourth Congressional District. The Associated Press declared her the winner shortly after polls closed, underscoring her commanding lead.

Ms. Boebert, a vocal right-wing legislator, initially secured her seat in 2020 by defeating an incumbent Republican in the primary. She gained attention for her staunch pro-gun stance, openly carrying a Glock and encouraging staff at her now-closed restaurant to do the same. In Congress, she has become a prominent advocate for MAGA principles but has also faced personal controversies, including being expelled from a Denver theater in an incident captured on closed-circuit camera.

Faced with a formidable Democratic challenge in the expansive western Colorado district where she was first elected, Ms. Boebert opted to relocate to eastern Colorado to enhance her chances of retaining her seat a decision that appears to have paid off.

Earlier this year, the vacated seat of Ken Buck, a departing Republican congressman, was temporarily filled by Greg Lopez, a former mayor of Parker who won a separate special election on Tuesday. Ms. Boebert opted not to compete in the special election to avoid jeopardizing her current seat and impacting the slim Republican majority.

Endorsed by former President Donald J. Trump, Ms. Boebert leveraged her national recognition to secure significantly more campaign funds than her five primary opponents. Despite accusations of opportunism for changing her residency, she prevailed due to the split anti-Boebert vote among her rivals.

In the 2022 election, Ms. Boebert narrowly retained her original district by a margin of just over 500 votes against Adam Frisch, a Democrat who had previously challenged her without significant outside support. This time around, Mr. Frisch garnered strong financial backing from Democrats aiming to unseat Ms. Boebert.

With Ms. Boebert no longer in the race, Democrats are setting their sights on capturing the seat she currently occupies in the conservative district. This area encompasses upscale ski resorts, energy installations, and operational ranches. In an effort to increase their chances, Democrats have been supporting a right-wing conservative candidate in a competitive primary. Their strategy gambles on the belief that a far-right Republican opponent could be more vulnerable to defeat by Mr. Frisch in the upcoming November elections.