Republican convention planners appear to have a surprise planned for those tuning in Thursday night. Buried deep in the convention schedule released Monday is a vague reference to a mystery speaker scheduled for the event’s final evening. “To Be Announced” has a prime speaking slot late in the Thursday program. [Wall Street Journal]

BY THURSDAY NIGHT, Bain partners from Staples will have appeared, Chris Christie, Sen. Rob Portman of Ohio., former presidential candidates Rick Santorum and Newt Gingrich, even Florida Gov. Jeb Bush and former Secretary of State Condoleezza Rice, as the WSJ points out. George and Dick aren’t attending and wouldn’t make for a blockbuster closer for what Romney needs in a night that includes Sen. Marco Rubio.

So, who might it be?

National Review Online’s “Morning Jolt” and Jim Geraghty ask “Is it… Her?”

The more you think about the idea, the more it makes sense ““ whatever controversy and intense reactions Sarah Palin may bring to whatever she does, if there is one thing we know she does exceptionally well, it is give convention speeches! This wouldn’t mean turning her into an official Romney surrogate or putting her in a Romney cabinet or anything like that ““ just giving one of the Republican figures most beloved by the grassroots ““ or at least a large and vocal segment of the grassroots ““ a chance to fire up the base and discuss why it is so important that everyone pull out all the stops for Romney.

Say what you will about Sarah Palin, but the woman’s got show biz game.

However, Thursday will be the most widely viewed night of the week. What would finishing with Sarah Palin say to voters in swing states that Romney’s trying to reach?

If this happens, get ready for Kathleen Parker to write “What the *#@% Is Wrong With Republicans?“ part deux.

The better, stronger, looking to the future choice is Liz Cheney.