On February 11th, during the New Hampshire primary (ABC News footage will be inserted in), The Conners will air a live episode on both the East and West coasts. Mark will be watching it for a school project with Harris and the family offers their differing opinions. Meanwhile, Louise gets an offer that may let her move away and the kids anger Dan when they try to throw her a going-away party.
Meanwhile, Noel Fisher has been cast in a recurring role as Ed and Crystal's son/Dan's brother (he also has a half-sister named Angela) Little Ed. A college graduate, he resents Dan a bit for not helping out with their father.
Sources 1 and 2