CNN's John King explains why Michigan is critically important to Democrats hoping to retake control of the Senate.

What Michigan’s Senate primary could reveal about Democrats’ future

Breaking down the Michigan Senate primary

High-stakes Michigan Senate race among primaries in 5 states

What are Michigan voters saying about the Senate primary?

Michigan Democratic voters explain their vote in Senate primary

Analyzing Michigan's Democratic Senate primary

The Battle for Michigan's Senate Seat

First deaths in cyclosporiasis outbreak reported in Michigan as cases surpass 11,000