2018Final results
2018 election for Colorado House District 21
Colorado House of Representatives · Colorado
Lois Landgraf (R) won with 58.6% of the vote, defeating Liz Rosenbaum (D) by 17.1 points.
Lois LandgrafRepublican · winner · incumbent
58.6%12,529
Liz RosenbaumDemocrat
41.4%8,863
21,392 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET