Two hours after Sen. Hillary Clinton canceled her evening campaign stop at a Roanoke high school, the campaign of Sen. Barack Obama, her chief rival for the Democratic Party's presidential nomination, announced the cancellation of his Monday morning appearance here.

Obama was scheduled to appear at 7:30 a.m. at the Jefferson Center. Free tickets were made available at Obama's downtown Roanoke office starting at noon today. By 1 p.m., a line of people stretched an entire city block from Kirk Avenue and First Street to Second Street. An Obama campaign official said the candidate had intended to fly in to Roanoke tonight but the high winds have made that impossible. The Illinois senator appeared in Hampton Roads this evening.

An Obama spokesman says the campaign doesn't plan to visit Roanoke before Tuesday's Virginia presidential primary election but is working on getting the senator on some Roanoke-area radio call-in shows Monday morning.

Clinton also canceled her Roanoke campaign stop because of the high winds. Instead, former president Bill Clinton will visit Roanoke Monday at 6:30 p.m. at Patrick Henry High School.