SAN FRANCISCO, Oct 28 (Reuters) - An intruder demanding to see U.S. House Speaker Nancy Pelosi broke into her San Francisco home and attacked her husband with a hammer early on Friday, officials said, in an assault that stoked fears about political violence ahead of the Nov. 8 midterm elections.The booking may have been conducted in absentia, as San Francisco Police Chief William Scott later told reporters Depape was still hospitalized.Authorities were still investigating a motive for the predawn attack, which was witnessed and interrupted by police officers dispatched to the Pelosi home for an "A-priority wellbeing check," Scott said.As a Democratic leader in Washington and a longtime representative from one of America's most liberal cities, Pelosi, 82, is a frequent target of Republican criticism and is often featured in attack ads.Representative Adam Kinzinger, one of two Republicans on the House panel investigating the Jan. 6 attack, condemned the rise of incendiary campaign rhetoric vilifying political opponents and promoting falsehoods about widespread voter fraud."