Recent CNN polls show tight Senate races. The contests in Maine and Michigan have no clear leader, with voters in each state viewing their options differently. In Maine, voters' negative opinions of Senator Susan Collins and President Donald Trump are key factors. The Democratic candidate, Troy Jackson, is not well-known by many voters, having replaced Graham Platner after Platner faced sexual assault allegations, which he denied.

Further details on the Senate races are available from the source. The polls were conducted by SSRS.

The Michigan race is focused on the candidates' positions, although specific details are not provided.