Democrats in Michigan's state House are on the verge of one of their biggest majorities of the past three decades.
Barack Obama helped fellow Democrats farther down the ticket, including House candidates who already had a significant campaign fundraising advantage over many of their Republican rivals.
The result is that Democrats will increase their current 58-52 advantage over Republicans when the new Legislature convenes in January.
Democrats had won 65 House races in counting early Tuesday and were leading two more, putting them in position for roughly 67 seats in the next legislative term.
Republicans had won 37 seats and were leading six other races, a combined 43 seats.