Standing alone in the overlap of the concentric circles that include “former Saturday Night Live regular,” “former Rush Limbaugh antagonist,” and “former U.S. Senator” stands Al Franken. And if Franken’s resumé is unique, then certainly his perspective must be as well. Santa Cruz audiences get a chance to encounter Franken, now a popular podcast host, first-hand when he visits the Civic Auditorium on his Only Former U.S. Senator Currently on Tour Tour, where he gleefully blurs the line between the comedic and the serious in the political realm. Showtime is 8 p.m. Tickets for the originally scheduled Jan. 7 date will be honored.