He's big everywhere, especially among Christian radio listeners. His half-hour daily show has listenership well into the millions; he talks mostly about family issues, child-rearing, etc. He occasionally talks about political issues; mostly about "social" issues, and yes, people listen to him.
That said, this email was a private email sent to his friends; it was *not* an official endorsement of Focus on the Family, and will not likely have wide influence, since he probably won't discuss it on his show.
Thanks!
He should at least discuss the private nature of the email on his show and clarify that it's not an endorsement by his organization, and then drop the subject. He should also find out who leaked the email and make them damn sorry they did.