♪ >> hey -- >> we see mary mccormack come in, played kate harper on the show and one of their famousalk and talk scenes. >> this is the voting thing. >> what voting thing? >> now in the office of c.j. craig. josh lyman is upset about something. >> people aren't voting. >> here's the crisis. 15 states have a non-partisan ballot section during their election. michigan is one of those states. >> okay. explain this to me like i'm a 2-year-old and try to do it like you are not. >> people walk into the voting booth. they check the straight party ticket box and they think they have voted for everything, but they haven't. they still have to vote on the non-partisan section of the ballot. >> that's a big deal in a place like michigan. they're non-partisan. >> voting half way? >> not voting for everything that can be voted o. right. >> so "the west wing" cast gets together as sort of a voting psa? >> almost. >> this is bridget mary mccorporal it. ma mary mccormack's sister running for state stream court in the non-partisan section of the ballot. >> a and she's mary mccormack's sister. >> wait.

in this endorsement for bridget mccormack who is the sister of actress mary mccormack who played kate harper for three seasons on the west wing. bridget is a university of michigan law professor. she's running for a spot on the michigan supreme court and because it is a nonpartisan position, a lot of voters might skip over that race. this is very bad. state courts overall decide 95% of this country's legal cases. so coming to us tonight from grand rapids and the great state of michigan is supreme court candidate bridget mccormack. bridge et, so great to have you inside "the war room." >> it's great to be here, governor. thank you for having me. >> jennifer: you bet. so how were you and your sister able to convince the entire cast of the west wing to make this commercial? >> well, it's not quite the entire cast. hill is missing. but as it turns out it take -- it didn't take a lot of work convincing. i think the cast remains close. they're good friends and my sister asked and they all said sure. sounds like a good cause. >> jennifer: you didn't have to pay for that? >> no. you know what? no no

. >> reporter: mary mccormick, as in the real life actress who played kate harper for the show's finalnion of stars is about more than family ties. in one version, the cast doesn't even mention the candidate. just the fact that in many states, voters often skip part of the ballot. >> they check the straight party ticket box and they think that they have voted for everything, but they haven't. they still have to vote on the nonpartisan section of the ballot. >> you have a very real reason to watch a four-minute psa about remembering to look at the entire ballot. >> reporter: celebrities drawing attention to political issues is nothing new. sheen is a well-known activist, and celebs from chuck norris to sarah jessica parker have lent their voice to the presidential candidates. >> let it be written, let it be done. >> reporter: for fans of this fake president, it's a rare chance to catch up with some old friends, and perhaps get a civics lesson in the process. for "today," kristen dahlgren, nbc news, los angeles. >> you have to admit, it's a very creative idea. >> and effective, i would i