Jeff Suppan is scheduled to pitch for the St. Louis Cardinals in Game 4 of the World Series at Busch Stadium, but his time on the mound will not be his only appearance on the baseball telecast. Suppan is one of several athletes in a political campaign commercial to be broadcast regionally during the Fox network’s telecast of the game. The ad urges Missouri voters to oppose stem-cell research and vote against Amendment 2 to the state constitution, on the ballot in the Nov. 7 election. In a video copy of the ad, produced and distributed by an anti-amendment group...