Erik Aadland is the Republican nominee in Colorado's 7th Congressional District, which includes plenty of rural/foothill land but in terms of population is dominated by Jefferson County. It's been in Democrats' hands for over 15 years but now with incumbent Ed Perlmutter retiring, this feels like a seat that a Republican can win in a "red wave" year, especially with the Democratic candidate being the uber-Progressive State Sen Brittany Pettersen.
https://aadlandforcolorado.com/
Even the national press is noticing this race: How bad have things gotten for Democrats? Their candidate is up by only 2 points in a GOP poll of an open Colorado district that Joe Biden won by 15 points in 2020. (politico.com)