WATCH CBS NEWS VIDEO: DNC NEWS AND ANALYSIS LIVE COVERAGE
Duggan On Write-In Campaign: "We've Done Everything We Can Do"The supporters were all wearing a sandwich board bearing a sample ballot, showing how his name should be written in and the oval next to it filled in.

More From CBS Detroit

Best 4th Of July Concerts In Metro DetroitStaying home this weekend? Celebrate the 4th of July by rocking out at one of these shows.
Hump Day Drinks: 8 Cheery Cocktail RecipesNow that you've made it through half the work week, it's time to celebrate!

Watch & Listen