[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/08/11/art.text.gi.jpg caption="Obama's VP choice will be announced via text messaging."]
(CNN) - It used to be that a presidential candidate announced his running mate at a carefully staged rally in a crucial swing state designed to boost buzz for the ticket and maximize media coverage.
But in a presidential cycle where so many of the conventional rules no longer appear applicable, Barack Obama's campaign said Sunday the Democratic VP choice will be revealed via e-mail and text messages to supporters.
"Barack Obama is about to make one of the most important decisions of this campaign - choosing a running mate," Obama campaign manager David Plouffe wrote in an e-mail to supporters Sunday night. "You have helped build this movement from the bottom up, and Barack wants you to be the first to know his choice."
Plouffe's e-mail is sure to raise speculation a running mate announcement could be imminent, even as Obama vacations in Hawaii and the Olympic Games reach full swing in Beijing. Most political observers had expected Illinois senator to announce his VP choice after the Olympics, ended in the small window before the Democratic convention.