There’s a rising star in leftist politics, and we don’t mean the California senator or the representative from the Bronx. No, it’s the talent booker for the Wisconsin Democratic Party, who has already put together cast reunions for Veep, Happy Days, The Princess Bride, and Parks and Recreation. Now, the donkeys in the Dairy State have announced a Halloween night livestream featuring music and actors from The Rocky Horror Picture Show. Based on the 1973 musical The Rocky Horror Show, the RHPS film arrived in 1975 as an instant cult-classic. The gender-bending comedy took on new life after theaters in Los Angeles and San Francisco arranged midnight screenings with so-called “shadow casts” — groups of live performers who acted out the movie and encouraged audience participation. Wit...