Date of Birth: 
About Marc Steinorth
- Marc Steinorth (born May 19, 1970) is an American politician who served in the California State Assembly.
- A Republican, he represented the 40th Assembly District, encompassing the San Bernardino County communities of Highlands, Loma Linda, Redlands, and parts of both Rancho Cucamonga and the city of San Bernardino.
- Prior to being elected to the State Assembly, he was a Rancho Cucamonga City Councilmember. Steinorth was first elected to the State Assembly in 2014, and was re-elected in 2016.
- He chose not to run for re-election to the State Assembly in 2018.
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