Thomson Reuters
Democratic nominee Hillary Clinton was up by double-digit margins just a month ago, but since then, polls have significantly narrowed.
And it's clear that Donald Trump's campaign considering Michigan in play. The Republican nominee held the final rally of his campaign in Grand Rapids, Michigan on Monday night.
Clinton's campaign has had a presence in the traditionally blue state this week as well - Clinton was in Grand Rapids and President Barack Obama was in Ann Arbor on Monday.
Developing...