The 1972 United States Senate election in Michigan was held on November 7, 1972. Incumbent Republican U.S. Senator and Senate Minority Whip Robert P. Griffin won a second full term against Democratic nominee and Michigan Attorney General Frank J. Kelley by 6%. Despite President Richard NixonâÂÂs landslide victory in Michigan and the rest of the country, GriffinâÂÂs margin of victory decreased from the previous election. Following his defeat in this election, Kelley continued to serve as Michigan's State Attorney General until he left office in 1999.
As of , this was the last time that the Republicans have won MichiganâÂÂs Class 2 Senate seat, as well as the last time that a Republican won re-election to either Senate seat in Michigan. Since this election, Republicans have only won one more Michigan U.S. Senate race, in 1994.