Because after tonight, this will be over.
Before we let it go, however, let's think for a minute about the way television is covering these debates. Not to pick on CNN, which does a less partisan job than MSNBC or Fox News Channel, but that on-screen graph featuring moving approval lines during the debate is maddeningly stupid and irrelevant.
We're supposed to believe that this tiny, non-representative sample of "undecided voters" turning dials up and down tells us who's winning.
For that matter, all the coverage of all the supposed "undecided voters" on all the networks is ridiculous. There are the people who, this late in the game, can't decide between Obama and Romney despite the gulf between the two.
I get that these are the people who will decide who wins the election. And that's sort of scary.
There's a reason it was funny when "Saturday Night Live" parodied undecided voters with a bit that featured faux undecideds asking:
"When is the election?"
"What are the names of the two people running? And be specific."
"Who is the president right now? And is he or she running?"
At any rate, no more debates after tonight.
Elsewhere on TV ...
National League Championship Series (6 p.m., Fox/Ch. 13): Game 7 - St. Louis Cardinals at San Francisco Giants
90210 (7 p.m., CW/Ch. 30): A detective questions Liam about Vanessa's whereabouts.
RuPaul's Drag Race All Stars (7, 8:40 and 10:20 p.m., Logo): The drag competition begins.
Gossip Girl (8 p.m., CW/Ch. 30): There's a scandal on the runway of Blair's first fashion show.
Dancing With the Stars: All-Stars (9 p.m., ABC/Ch. 4): The competition continues.
The Voice (9 p.m., NBC/Ch. 5): The battle rounds continue.
Switched at Birth (9 p.m., ABC Family): The trial concludes; Bay and Zarra sneak away. (Season finale)