Greg MacMaster was born in 1962 in Inglewood, California. He served in the United States Air Force for a decade during the 1980s before transitioning to a career in media as a TV and radio weatherman. MacMaster then moved into public service, serving as a member of the Michigan House of Representatives from 2011 to 2014. He later ran for the Michigan Senate but did not secure the nomination. His professional background showcases a blend of military service, media experience, and legislative work, establishing a diverse skill set.

Greg MacMaster combines a surprising mix of free-market economic policies with progressive environmental stances, advocating for reduced corporate taxes alongside investments in renewable energy. His support for charter schools juxtaposes his push for increased public school funding, suggesting a nuanced approach to education reform. MacMaster's opposition to the Affordable Care Act, paired with his endorsement of market-based healthcare solutions, reveals an ideologically agile stance on social services.