Vice President Mike Pence, who sought to unify Republicans at a post-primary rally in Grand Rapids, said the "blue wall" crumbled in MI with Trump's 2016 win - the first for a GOP presidential nominee in decades. Most GOP strategists believe that Kobach, who served on Trump's short-lived voter fraud panel, is so polarizing that he could lose to a Democrat in the fall - even in a state as red as Kansas.
Female candidates also had victories in several other national and state primaries.
"We need to throw Bill Schuette a big retirement party come November", Whitmer told jubilant supporters in Detroit. Party activists will choose attorney general and secretary of state nominees at a convention in late August, and Schuette said Wednesday his running mate will be a woman. It would be a first for either party in MI and is part of the broader surge in women running for office - mostly as Democrats - since the election of President Donald Trump.
"I mean, if she were to get into a discussion with somebody who asks her tough questions, I don't think she has the information or the philosophy at her disposal to actually answer those questions well", Shapiro said.
The Michigan governorship is a top target for the Democratic Party, which is eager to make gains in the Midwest, where Republicans have dominated state governments and which helped President Donald Trump take the White House in 2016.
Whitmer is from MI and now lives in East Lansing with her family.
Republicans say they expected higher Democratic turnout. We have done great things here. Look at Flint and the Detroit schools.
Steve Lauer, 75, a retired business consultant from Traverse City, said he backed Schuette because of his experience and conservative beliefs. "I like lower taxes", he said. He pointed to his June poll of likely November voters that showed 57 percent were extremely interested in the election and extremely motivated to vote, but among Democratic women it was 67 percent. Businessman Shri Thanedar came in third with 15.9 percent of the vote.
In another suburban Detroit district, the 9th, Andy Levin was leading former state Rep. Ellen Lipton in the Democratic primary to succeed his father, longtime Rep.