Last week, ABC’s George Stephanopoulos conducted a back-and-forth Twitter exchange with Missouri Sen. Claire McCaskill, who is one of the most prolific Twitterers in Congress.

TwitterGSJM.jpgWell now, the moderator of the Sunday morning public affairs show “This Week” will conduct his first Twitterview — an interview via Twitter — and he’s doing it with Sen. John McCain.

We’re going to attempt to conduct a full interview exclusively on Twitter — complete with the 140-character limit!
All a part of exploring new ways to connect with our “This Week” viewers online. So, if you have any suggested questions for me to ask Sen. McCain — in 140 characters or less — “twitter” me!

Last Friday, msnbc.com’s First Read wrote about how Sen. McCain has gone from being a “candidate who acknowledged during the 2008 presidential campaign not using e-mail or Blackberries to now being a Twitter touter.”

TVNewser conducted its first (and so far only) Twitterview in September with CNN’s Rick Sanchez.