A new poll of likely voters in Michigan's 3rd congressional district shows incumbent Republican Justin Amash with a huge lead over Republican primary challenger Brian Ellis.

Amash leads in the poll by a 55-percent to 35-percent margin, far exceeding its 3.5% error margin.

The poll was conducted by Lansing-based Epic MRA for WOOD TV.

The 20 point margin comes as a surprise to some, since Ellis has gained the support of some powerful organizations, such as Right to Life of Michigan, the state Chamber of Commerce and the Michigan Farm Bureau.