HAPPENING NOW: Biden stumps in Michigan

Catch Biden's event on CNN.com/live.

(CNN) - Democratic VP candidate Joe Biden is holding a campaign rally in St. Clair Shores, Michigan.

The latest CNN/Opinion Research Corporation poll suggests the Democratic ticket is holding a narrow lead in that key battleground state.

Check out the event on CNN.com/Live

Update: This event has ended, but stay with CNN.com/live for all the day's events on the campaign trail.'