Complex sentence: In 2010, he ran for the Oakland County Commission, winning a three-way Democratic primary on August 3,2010 and besting a Republican in the November general election in a reliably Democratic district.
Split into simpler sentences: In 2010, he ran for the Oakland County Commission. He won a three-way Democratic primary on August 3,2010 and bested a Republican in the November general election in a reliably Democratic district.