Henry Winkler's Fonzie will reunite with his Happy Days cast this Sunday to raise funds for theDemocratic Party of Wisconsin — home state of the iconic sitcom. Joined byRon Howard (Richie Cunningham), Don Most (Ralph Malph), Anson Williams (Potsie Weber), Marion Ross (Marion Cunningham), as well as writer Lowell Ganz plus a few special guests, the event will be available for a minimum donation of $1, with all proceedsaiding Joe Biden's campaign in the key battleground state.