Polls: Kasich last in Michigan
© Greg Nash

Donald TrumpDonald John TrumpKoch-backed group launches six-figure ad buy against Heitkamp Anti-abortion Dem wins primary fight Lipinski holds slim lead in tough Illinois primary fight MORE dominates in Michigan, while John Kasich trails the GOP field, according to a pair of polls released ahead of next week's primary.

Kasich, the governor of neighboring Ohio who's trying to lean on support in the Midwest, takes just 8 percent, tying with Ben Carson, who is expected to formally suspend his campaign Friday.
The Ohio governor also trails his three top rivals in another Michigan poll from Mitchell/Fox 2, taking 12 percent behind Cruz, at 14 percent; Rubio, at 19 percent; and Trump, at 39 percent.
The polls come ahead of Thursday night's GOP debate in Detroit as the candidates look to derail Trump, who has racked up delegates in a series of wins, including on Super Tuesday this week.
The Free Press survey of 400 likely GOP primary voters was conducted Saturday through Monday with a margin of error of 4.9 percentage points.
The Mitchell survey of 679 likely GOP primary voters was conducted on Tuesday with a margin of error of 3.76 percentage points.