When former Hewlett-Packard Co. CEO Carly Fiorina announced her candidacy for a U.S. Senate seat in the California Republican primary last week, she argued that her business experience with HP made her the only candidate with a chance to challenge longtime Democratic incumbent Barbara Boxer. She may find that platform a tough sell. Fiorina's declaration to run has brought her old critics out of the woodwork, many recalling that in her time overseeing HP, the company experienced a litany of negative publicity—from a series of controversial mergers and acquisitions to a 60% drop in the market value of its stock to the rise in the legitimacy of computer competitor Dell Inc. Potentially worse, however, are the recent reports that since 2000, Fiorina did not vote in almost 75% of California state elections, including all gubernatorial elections and presidential primaries. Yet many in the state believe Fiorina, a recent breast cancer survivor, might be the first significant threat to Boxer's 17-year run in the Senate. As Fiorina said in an essay in the Orange Country Register on Nov. 4, "After chemotherapy, Barbara Boxer just really isn't that scary anymore."