He's an obnoxious blowhard, but when he has media buzz over wanting to debate Obama and speaks at Republican party events, he most certainly has influence.
Howard can yell and scream about it, but last year wasn't exactly a banner year for him or the show. When he debuted, sure, but lately Satrad is just struggling to survive and not exactly showing a lot to attract new listeners or even keep the old (same with Howard, who is still bitching about doing Letterman and seems to be running out his contract). I mean, shit Sirius, if you change the PDT twice a year, how about doing it sometime soon? Several of the channels are still mismarked and categorized. Frankly the only good promotion for Satrad was a number one pop song (which edits out the mention in the clean/radio version....including the one played by SiriusXM!)