If Madisonians wanted to keep their liberal talk radio station, they might have started by listening to it at least as much as people listen to the home of conservative talker Vicki McKenna. That they didn’t is not a sign that there are thousands of secret conservatives lurking in the Madison shadows. Nor is it a criticism. The owners of WXXM-FM, formerly known as The Mic, announced this week that it would drop its liberal talk format. In the most recent Nielsen ratings, it had been drawing a 2.1 share, or less than half that drawn by WIBA-AM, home to...