By Barb Shelly, Kansas City Star editorial page columnist

(Additional thought added at bottom)

Today's tempest in a teapot concerns PBS journalist Gwen Ifill, the designated moderator for the vice presidential debate Thursday in St. Louis.

Conservatives like Rush Limbaugh and Michelle Malkin are keying on Ifill because she has a book due out on Inauguration Day.

The book is titled The Breakthrough: Politics and Race in the Age of Obama.

From what I've heard, the book is less a glorification of Obama than a scholarly look at a new black political class.

But that's not why I think the controversy over Ifill's role in the debate is overblown. I think that because only a fool would try to rig a nationally televised debate to favor one candidate or another.

Ifill is one of the smartest, most respected journalists on the scene. She would no more taint her professional reputation by slanting a debate than dance on a tabletop during The NewsHour.

Additional thought: Might these attacks on Ifill's credibility be a preemptive strike by folks who really are partisans? Ifill asks a question that stumps Sarah Palin and--guess what?--she's biased.