With so much to lose, the candidates aren't taking any chances.
Both Hillary Clinton and Donald Trump are sending several surrogates to Michigan over the next week.
Wednesday, Donald Trump Junior will stump for his dad at the MSU Union in East Lansing.
That event starts at 12:30 p.m. Trump's daughter Ivanka is also stopping in Michigan Wednesday at the Michigan Women Business Roundtable in Troy at 6:30 p.m.
Republican Vice Presidential nominee Mike Pence comes to Michigan on Thursday and Trump's son Eric will visit on Friday.
Details on those visits have not been released.