-- Democrat Abdul El-Sayed and Republican Mike Rogers are testing two sharply different theories for winning one of the nation's premier swing states Tuesday in a white-knuckle contest that may determine control of the Senate.

El-Sayed is aiming to prove that an unapologetically progressive agenda centered on universal healthcare can win a general election in a state President Donald Trump carried two years ago.

The former Wayne County health director narrowly defeated establishment-backed Rep. Haley Stevens in an expensive and bruising Democratic primary.