Called by civicAPIUnofficial results
Colorado Senate District 20
Colorado State Senate · Colorado
Sheila Lieder held the seat for Democrats, winning by 19.8 points over Richard Mancuso.
Staggered Senate
Sheila LiederDemocrat · winner
59.9%54,291
Richard MancusoRepublican
40.1%36,358
90,649 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
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Sheila LiederRichard Mancuso
$179.5K
Raised by the campaign
$13.3K
$194.6K
Spent by the campaign
$11K
Campaign money: Colorado Secretary of State (TRACER), through Oct 28, 2026; Colorado Secretary of State (TRACER), through Oct 27, 2026.
Source: Colorado Secretary of State (TRACER) campaign filingsUpdated Oct 27, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Sheila Lieder
- >99%
- Richard Mancuso
- <1%
- Projected margin
- D+25.6