"The O'Reilly Factor"

"The O'Reilly Factor" is facing a growing advertiser revolt, as 21 companies have pulled their commercials from the show amid a scandal involving the host, Bill O'Reilly.

Mercedes-Benz, Hyundai, BMW of North America, Mitsubishi Motors, Lexus, Constant Contact, Bayer, Ainsworth Pet Nutrition, Orkin, UNTUCKit, Allstate, Esurance (which is owned by Allstate), T. Rowe Price, GlaxoSmithKline, Sanofi, Credit Karma, Wayfair, The Wonderful Company, TrueCar, the Society for Human Resource Management and Coldwell Banker are pulling ads from "The O'Reilly Factor" after a report about five settlements with women who alleged sexual harassment or verbal abuse by O'Reilly.

The decisions signal the potential of financial damage for "The O'Reilly Factor," the most popular show on cable news, and its network, Fox News.

Paul Rittenberg, the executive vice president of advertising sales at Fox News, addressed the exodus in a statement on Tuesday.

"We value our partners and are working with them to address their current concerns about the O'Reilly Factor," Rittenberg said. "At this time, the ad buys of those clients have been re-expressed into other FNC programs."

The statement indicates that the companies' decisions to withdraw ads from the program have not yet hurt Fox's bottom line -- but the loss of advertisers is at the very least a public relations problem for the network and its most valuable asset.

Companies began announcing their decision to pull out of "The O'Reilly Factor" Monday evening. On Tuesday, a trickle of announcements quickly turned into a wave.

Hyundai said early Tuesday that it is not currently advertising on "The O'Reilly Factor" but will remove upcoming ads because of the "recent and disturbing allegations."

"We will continue to monitor and evaluate the situation as we plan future advertising decisions," the company said.

Mercedes-Benz used similar language on Monday when it pulled its own ads.

"The allegations are disturbing and, given the importance of women in every aspect of our business, we don't feel this is a good environment in which to advertise our products right now," spokeswoman Donna Boland told CNNMoney.

BMW of North America announced Tuesday that it was also suspending its ads on "The O'Reilly Factor." And the investment firm T.Rowe Price said Tuesday afternoon that it had decided to pull its upcoming ads from the program in light of the new allegations.