From NBC/NJ's Aswini Anburajan
In a "P.S" message to supporters, Iowa state director Paul Tewes announced that Obama will also air a two-minute message to voters on Wednesday night before the caucuses.

Clinton has already announced she will be doing a two-minute closing argument to voters right after their evening newscast. Edwards announced today he is airing 60-second ads during newscasts tomorrow and Thursday.

Will the candidates go back-to-back-to-back? The Obama campaign is staying tight-lipped on releasing any more details.

Tewes Message:
P.S. -- This Wednesday, the night before the caucuses, we'll be airing a two-minute message from Senator Obama on TV stations across Iowa.

Be sure to watch during your local evening news broadcast: Des Moines