On August 26, 1944, Heinert was born in Belle Fourche, South Dakota.
[1] On November 2, 2004, Heinert won the election and became a Republican member of Montana House of Representatives for District 1.
Heinert defeated Eileen J. Carney and Russell D. Brown with 48.71% of the votes.
[2][3] On November 7, 2006, as an incumbent, Heinert won the election and continued serving District 1.
Heinert defeated Eileen J. Carney and Russell D. Brown with 47.70% of the votes.