McCain's home state.
The crowd expected to attend Arizona State University's commencement to hear President Barack Obama's speech has swelled to 63,000 and appears to be the largest U.S. audience the president will have addressed since his inauguration.
A member of the White House communications staff said Friday that Obama has spoken before many crowds since the January ceremony that officially marked the start of his presidency, but none in the United States is thought to be larger than 2,000 to 3,000 people.
For some who only dreamed of attending the Washington, D.C., ceremony, ASU's commencement on May 13 has become the Western version of Inauguration Day. The much-coveted ASU tickets were reserved within hours after the commencement office made them available to a graduating class of more than 8,000 students and to faculty and staff.
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