The Mystery of the Bulge in the Jacket

WASHINGTON, Oct. 8 - What was that bulge in the back of President Bush's suit jacket at the presidential debate in Miami last week?

According to rumors racing across the Internet this week, the rectangular bulge visible between Mr. Bush's shoulder blades was a radio receiver, getting answers from an offstage counselor into a hidden presidential earpiece. The prime suspect was Karl Rove, Mr. Bush's powerful political adviser.

When the online magazine Salon published an article about the rumors on Friday, the speculation reached such a pitch that White House and campaign officials were inundated with calls.

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