Four shows on PBS are faves among most conservative and liberal TV viewers

Viewers on each end of the political spectrum, conservative Republicans and liberal Democrats, have favorite PBS shows, according to a yearlong study by the Experian Simmons consumer research firm. It wanted to see what programs indexed highest and lowest among those viewers. Masterpiece was the third-highest indexing show among liberal Democrats, behind only The Daily Show and Colbert Report, says the Washington Post, which noted, "Masterpiece indexes at a whopping 234, which means a Masterpiece viewer is 134 percent more likely to be a liberal Democrat than the average adult viewer."

Three shows on PBS also rank in the conservative Republican index: This Old House, New Yankee Workshop and Antiques Roadshow.

And Frontline is No. 10 among news shows for liberal Democrats.

Here are the complete lists from Experian Simmons.