In markets in which stations have dropped or lost Rush, and the current station continued with the right-wing talk format, Rush has lost listeners. Some listeners follow Rush. Some stay with the station. Proportions vary. In many of these markets, Rush has been the only option for right-wing talk (or close to the only option, allowing for a weak stick Salem outlet or some such). People listening to Rush out of habit or because nobody else on the radio was speaking for them will drop out. People leaning right but sick of Rush's diatribe may come back for the "kinder, gentler" and more civil Huckabee. That's been the pattern so far.
Even more important, Rush has been losing advertisers and ad revenue. Another option, on established, heritage blow-torch stations in many markets, is likely to increase the flow of ad dollars away from Rush (and Bain Channel).
Those with blind loyalty to Rush (and Hannity) may get a surprise before this time next year. Rush will probably stay on but he will be limping along, sort of like the I-man.
PS: The Politico article makes clear, this is about money. Bain Channel-Premiere's wants big bucks to carry these two shows. Nothing new. This has drawn complaints before but stations apparently thought they've had no choice but to pay up. If Cumulus' stations see black in without Rush and Hannity, look for more stations to refuse to fork over cash to Bain.
