What? Are the caucuses on Sunday?

Editor's note: This item has been updated since it was first posted, to include an explanation from the Obama campaign.

Oops. Barack Obama's campaign for president in Washington is recovering from an embarrassing slip-up. Thursday, the campaign made Get Out The Caucus (GOTC) calls to an undisclosed number of voters.

This is what the calls said:

Hello I'm calling on behalf of the Barack Obama campaign to remind you to caucus for Barack Sunday, Feb. 10. If you have questions on where to caucus or what time, please call 866-675-2008 or visit barackobama.com. Thank you.

Do you notice something wrong? The message tells voters to caucus on Sunday, not Saturday, Feb. 9.

Olympia-area Barack Obama supporter Rhys Roth was alarmed when he heard the call on his answering machine: "I thought that was very odd and I was really concerned that someone is sending out misinformation."

There have been cases of insurgent robocalls. But that's not what happened here.

According to a statement from the Obama campaign: "Phoners who had been calling into Maine, which holds its caucus on Sunday, mistakenly gave the wrong date to a relatively small universe of voters in Washington state. The problem has been resolved, and those voters are being called back with the correct information."

Roth, the Obama voter who got one of the calls, says the foul-up is understanding: "In a campaign this enormous nationally people do make mistakes."