99chambers
Called by civicAPIUnofficial results

Colorado Senate District 25

Colorado State Senate · Colorado

William Lindstedt won re-election by 34.0 points over Rich Guggenheim.

Staggered Senate

William LindstedtDemocrat · winner · incumbent
65.7%51,167
Rich GuggenheimRepublican
31.7%24,677
Mark Philip BromleyIndependent
2.5%1,982
77,826 votes

Source: Colorado Secretary of State unofficial results; race call: civicAPIUpdated Nov 7, 2026, 1:35 PM ET

Where the race moved

Against the 2024 presidential vote

The seat's recent races

EvenD+23.02022 SenateD+23.82024 Pres.D+34.02026 Senate

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)

Money in this race

Each line compares the two campaigns on one scale.

William LindstedtRich Guggenheim
$109.3K
Raised by the campaign
$8K
$88.7K
Spent by the campaign
$18.8K

Other candidates' campaigns: Mark Philip Bromley $649.

Campaign money: Colorado Secretary of State (TRACER), through Oct 26, 2026; Colorado Secretary of State (TRACER), through Jul 13, 2026.

Source: Colorado Secretary of State (TRACER) campaign filingsUpdated Jul 13, 2026

Pre-election forecast (final, Nov 3)

Our model's last run before Election Day, Nov 3, 2026. It no longer updates.

William Lindstedt
>99%
Rich Guggenheim
<1%
Projected margin
D+31.4
How the forecast works →

The candidates

William Lindstedt (D)
Incumbent, Colorado State SenateRich Guggenheim (R)

Also on the ballot: Mark Philip Bromley (Independent), 2.5%