And here are some more specifics.
In New York City, WABC has experienced huge gains during Rush's noon- 3pm timeslot: from 4.6 to 6.7 overall (12 and older) share, good for first place overall in the nation's largest market. Rush's Big Apple listenership is now estimated at 693,000.
In the second-largest market, Los Angeles, KFI-AM has surged into the number one position (all listeners 12 and older) from 9am to noon, with 618,000 listeners, a 4.6 to 6.0 audience share increase over three months and an even bigger males 35-64 (4.6 to 6.3) move, to take first place there as well.
Chicago, saw another huge move, with Rush affiliate WLS also taking first place during his timeslot (12 and older), from 5.2 share to 6.9 and a total local listenership of 396,700 in the third-largest market.
KSFO / San Francisco saw similar results, despite the extreme-left bent of the Bay Area: 4.7 to 6.0 share, now ranking second overall and with men aged 35-64. Total audience: 346,000.
In Dallas - Fort Worth, 4.8 to 6.4 men 35-64 and fourth overall (12+), 3.5 to 4.5. Cumulative audience: 250,000.
Houston's results were truly blockbuster: 6.0 to 9.8 overall, ranking number one with a bullet and audience of 382,300. Men 35-64: number one again, from 8.6 to 12.2 over three months. Adults 25-54: first place, 4.6 to 8.7. Women 25-54: 3.7 to 8.3 again good for a top ranking.
DC's WMAL also saw Rush-related growth: 4.1 to 6.7, good for third overall and an audience of 155,300. Men 35-64: number one with a staggering 6.4 to 13.4 move.
In Atlanta, Rush has helped WGST fend off an enormous competitor, WSB-AM, with a similar 4.0 to 6.2 upward move, good for fifth place overall and a total audience of 473,500. The results are better in the male 35-64 demographic, surging from 5.5 to 8.0 share.
Bucking Detroit's recent Democratic voting trend, Rush's performance on WJR-AM has been more significant than ever, moving into first place with a 5.8 to 9.6 jump. Men 35-64: number one and 11.6 share. Total audience: 253,000.
Given this blockbuster data, will the White House think twice before targeting Rush again?
Keep in mind that these numbers don't even include Limbaugh's strongest markets, medium-sized cities such as Reno, Albuquerque, Boise, Fresno, Bakersfield and hundreds of others where his program dominates local radio.
UPDATE: Rush's surge has also led to overall, full-day gains at most of these stations, with WABC/ New York moving into fifth place overall, ahead of many music stations. That's its best showing in at least a year.
KSFO/ San Francisco also rose overall, grabbing sixth place, while WLS/ Chicago now ranks second, a stunning feat.
Who's John Galt.
"Timeo Danaos et dona ferentes" - Virgil, The Aeneid, Book 2
If the Arabs put down their weapons today, there would be no more violence. If the Jews put down their weapons today, there would be no more Israel. --Benjamin Netayahu