I was just thinking about this again...
On the West Coast, where Rush airs 9 am to 12 noon, he has local lead ins from morning drive programs on nearly all - if not all - stations. In the East, some stations do have local-live shows in the late morning period but most air syndicated shows - most often, Glenn Beck. If a station does have a strong local show in late mornings before Rush at noon, most likely they would move the current show into Rush's midday slot and bring in a new show in late mornings (as happened in Wilmington, DE when Clear Channel bought a station and pulled Rush from the station that was carrying him).
For the record, here are the current syndicated conservative talk options:
TO LEAD INTO RUSH:
* Glenn Beck (Premiere)
* Laura Ingraham (TRN)
* Neal Boortz (Dial Global 10am-1pm)
* Dennis Miller (WW1 10am-1pm)
* Mike Gallagher (Salem)
* G. Gordon Liddy (Radio America 10am-1pm)
* Brian and the Judge (Fox News)
TO REPLACE RUSH
* Fred Thompson (WW1 - 12pm-2pm only)
* Dennis Praeger (Salem)
* Michael Smerconish (Dial Global)
* Jim Sumpter (IRN-USA)
* G. Gordon Liddy (Radio America - Re-feed)
* Mike Gallagher (Salem - Re-feed)
* Neal Boortz (Dial Global- Re-feed)