From time to time I fill in as guest host of the nationally syndicated Leslie Marshall Show. Leslie is a great progressive and you've likely seen her on the cable networks going up against right-wingers.

Filling in as guest host Wednesday night, I brought Media Matters vice president of research and communications Ari Rabin-Havt on to chat about News Corp.'s $1 million contribution to the Republican Governors' Association and the Dr. Laura controversy:

The Leslie Marshall Show airs live from 7 to 10 p.m. ET on radio stations from coast to coast. You can listen to the show streaming online, follow the show on Twitter and Facebook or subscribe to the show's podcast so you can listen on the go.