1970Final results
1970 election for Michigan Senate District 20
Michigan State Senate · Michigan
Harry A. Demaso (R) won with 55.2% of the vote, defeating Roger Johnson (D) by 10.5 points.
Harry A. DemasoRepublican · winner · incumbent
55.2%33,677
Roger JohnsonDemocrat
44.8%27,294
60,971 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET