1998Final results
1998 election for Colorado Senate District 13
Colorado State Senate · Colorado
Tony Grampsas (R) won with 54.8% of the vote, defeating Marsha Osborn (D) by 9.6 points.
Tony GrampsasRepublican · winner
54.8%27,663
Marsha OsbornDemocrat
45.2%22,803
50,466 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1998
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET