Whitmer will be challenged by Republican Bill Schuette and Libertarian Bill Gelineau.
Green Party candidate Jennifer Kurland was unopposed in the primary.
Almost 2.2 million votes were cast, a 28 percent spike over the 1.7 million mark from 2002, which is believed to be the previous record.
While the Michigan GOP's statewide ticket will be led by Schuette and Senate nominee John James, who are backed by Trump, it is still taking shape and could include women.
Voters in MI also decided two other primary races. Lauer said he likes Trump but that the president's endorsement didn't sway him. Whitmer also won slightly more than half of the Democratic votes, while El-Sayed received more than 30 percent to Thanedar's 17 percent.
Though voters went with outsiders Snyder in 2010 and Trump in 2016 - the first Republican presidential victory in the state in decades - some said Tuesday that they liked Whitmer and Schuette's political experience.
Ben Shapiro hits Alexandria Ocasio-Cortez on 'catcalling' claims: 'She didn't want to look like she was afraid'
In recent days Whitmer had leaned in to her front-runner status, refusing to mention her primary opponents on the campaign trail and admonishing campaign crowds to not take anything for granted. And yet our leaders have failed us, and that's exactly what this campaign is all about: taking care of the families of this state.
"We need a governor who knows how to get things done". Underfunding our schools, crumbling infrastructure, and water we can't drink. Democrats have hammered the administration across the state recently for Trump's protectionist steel tariffs, which they say are raising prices on everyday goods and hurting MI workers.
"The fact that there was so much more attention from the media and the electorate because the Libertarian party was participating in the primary".
More than five thousand people voted Libertarian, with candidate Bill Gelineau taking the nomination.
While quipping that "catcalling must be very weird in Queens", Shapiro accused people "on the left" of using a "defense in which anybody who requests a discussion or a debate must be evil by their very nature". There were power outages at more than 10 polling places around Metro Detroit. But the Secretary of State's office told voters to stay in line - everyone who was in line by 8:00 p.m. was allowed to vote.