The new Colorado House and Senate maps drawn through the once-in-a-decade redistricting process would shift the state’s legislative battlegrounds.

The maps still need final approval from the Colorado Supreme Court, but if they are adopted, fights for control of the Legislature would likely no longer be mostly contained to the Denver area.

For instance, Durango and the San Luis Valley, as well as Loveland and Nederland, would be the heart of competitive districts central to deciding which party is in the Senate majority. In the House, districts in El Paso and Weld counties could be the fiercest battlegrounds.

The Colorado Sun used an analysis by nonpartisan legislative staff members of the results of eight statewide races between 2016 and 2020 to determine what may be the four most competitive House districts and four most competitive Senate districts:

Senate District 12, which would include Colorado College just north of downtown Colorado Springs, Manitou Springs, Cascade, Fountain and Fort Carson, would also be highly competitive. Republicans would have a 2.4 percentage point advantage in the district, which effectively makes it up for grabs.

Both GOP Sens. Dennis Hisey and Bob Gardner live in the district, though Gardner would get to keep his seat if the map is upheld by the Colorado Supreme Court because his term isn’t up until 2025. The state constitution mandates that sitting state lawmakers be allowed to serve their entire term even if their district changes during redistricting.

Hisey is up for re-election in 2022. He could move into another district and run there to stay in the Legislature. State lawmakers must live in the district they represent

Given the district’s competitiveness, it’s possible a Democrat could win there. It would be wild to have two Democratic state senators from El Paso County given its historic status as a conservative stronghold. Though unaffiliated voters now outnumber Republicans in the county and former President Donald Trump saw a steep drop off in support from 2016 to 2020.

Meanwhile, four other House seats currently held by Democrats would be extremely competitive under the new maps.

They are:

The Colorado Sun is a reader-supported, nonpartisan news organization dedicated to covering Colorado issues. To learn more, go to coloradosun.com.