LAS VEGAS - President Obama addressed 16,000 supporters at a Denver rally this afternoon. But his campaign said two Obama conference calls from Air Force One later drew an even bigger - and arguably more important - crowd.
En route to Los Angeles from Denver for a taping of the "Tonight Show," Obama gave a 15-minute pep talk to about 17,000 swing-state campaign volunteers, according to a spokeswoman.
"This election is much more important than last time around," he told them, according to photographers who briefly were allowed to shoot the scene inside Obama's personal cabin.
Later, he held a 20-minute conference call with roughly 9,000 "undecided" swing-state voters invited to join by the campaign's field staff, aides said.
The president took questions that were suggested by voters on the call, but the questions were read to the president by staff members in Chicago, said Obama spokeswoman Jen Psaki.
President Obama is scheduled to place more calls Thursday. He uses a special campaign-designated phone on the plane that is not paid for by taxpayer dollars, aides told ABC News.