An internal poll conducted last week for one of the three Democrats hoping to deny U.S. Rep. Lauren Boebert another term in Congress shows potential challenger Ike McCorkle leading the Republican by double digits in Colorado's 4th Congressional District. However, a whopping one-third of the voters surveyed said they were undecided.

McCorkle, a Marine veteran making his third run for the seat, led Boebert 41% to 27%, with 33% undecided in a hypothetical general election contest, a survey of likely general election voters released Tuesday by McCorkle's campaign found.

The same poll showed former President Donald Trump 10 points ahead of President Joe Biden in the district, which covers Douglas County, Loveland and the Eastern Plains and is the state's most reliably Republican congressional seat.

According to results reviewed by Colorado Politics, Trump had 45% to Biden's 35%, with independent candidate Robert F. Kennedy Jr. polling at 6% and 14% of votes undecided. Trump won the district's electorate by an 18.5 percentage point margin in 2020.

Boebert, a two-term lawmaker representing the Western Slope-based 3rd Congressional District, moved into the 4th CD at the beginning of the year. She is facing five other Republicans in Colorado's June 25 primary for a full term in the seat vacated by Republican Ken Buck when he resigned from Congress in March.