Suburban Detroit lawyer David Trott is ahead early in his bid to defeat Republican U.S. Rep. Kerry Bentivolio in Michigan's primary election.
Debbie Dingell also is up big in the Democratic primary in her husband John's seat. John Dingell is retiring from the Democratic-heavy district in suburban Detroit at year's end after 58 years in Congress, and Debbie Dingell is expected to continue the 81-year Dingell dynasty.
In another closely-watched watched House race, two-term Republican Rep. Justin Amash is leading challenger Brian Ellis in western Michigan.
Voters on Tuesday began filling four House seats where incumbents are leaving. The lone statewide ballot measure asked voters to endorse a cut in taxes paid on business equipment.
