Conservative talk show host Rush Limbaugh has more than just advertisers to worry about now -- he's losing radio stations that play his show.

Two AM stations, WBEC 1420 in Pittsfield, Massachusetts, and KPUA 670 in Hilo, Hawaii, have dropped "The Rush Limbaugh Show." The decision was made after Limbaugh called Sandra Fluke, a 30-year-old law student at Georgetown University, a "slut" and "prostitute" for testifying about birth control before a Congressional panel.

WBEC is owned by Vox Communications Group and KPUA is owned by New West Broadcasting Corp.

In a statement, WBEC General Manager Peter Barry explained, "The nature of Rush's programming has always presented challenges for us and he's always pushed the envelope. But this time he's taken it too far."

KPUA added that Limbaugh "crossed a line of decency" and refused to accept his apology Saturday.

The list of companies who have pulled advertising from "The Rush Limbaugh Show" continues to grow as well -- to at least 24 upset advertisers as of Tuesday.

According to The Hollywood Reporter, Carbonite, ProFlowers, Tax Resolution Services, Legal Zoom, Citrix Success, All State, AutoZone, Sears, Quicken Loans, Sleep Train, Sleep Number, Oreck and AOL are among those who have canceled spots airing on the program. Reasons given included a difference in values and negative feedback from customers.

But Limbaugh's syndicator, Clear Channel-owned Premiere Networks, is defending the broadcaster. Premiere distributes his show to roughly 600 radio stations, including Clear Channel's WSYR NewsRadio in Syracuse.

» WSYR says it has not lost revenue after Limbaugh's verbal attack on law student

On Tuesday, Premiere Networks released a statement saying it was "committed to providing its listeners with access to a broad range of opinion and commentary without condoning or agreeing with the opinions, comments or attempts at humor expressed by on-air talent."

"We respect the right of Mr. Limbaugh, as well as the rights of those who disagree with him," Premiere said. His "attempt at absurdist humor to illustrate his political point ... used words that unfortunately distracted from the message he was trying to convey."

Business Insider points out, though, that even if Limbaugh lost his distributors, he could still continue broadcasting. "He could simply do exactly what [Glenn] Beck did, which was to move his operations to the web where he would be less likely to draw fire from a more carefully targeted audience," BI's Jim Edwards writes.

Beck ended his television show on Fox News Channel and started his own online media company in 2011. His syndicated radio show continued, which airs on WSYR's 570 AM and 106.9 FM in Syracuse, right before Limbaugh's show.

According to Talkers Magazine, Limbaugh's show reaches more than 15 million listeners a week and is the top-rated radio talk show in the nation. Second-ranked Sean Hannity has 14 million listeners, while Michael Savage, Glenn Beck, Mark Levin, and Dave Ramsey each average 8.5 to 9 million weekly.

» KXLY: Stations join advertisers in Limbaugh show exodus

» San Francisco Gate: Limbaugh Radio Show Faces New-Media Backlash as Advertisers Flee

» Milwaukee Journal Sentinel: Could Limbaugh show be dropped here?