Republican presidential candidate Michele Bachmann will appear on the national political show Face the Nation this Sunday.

Bachmann, who has been tanking in the polls, will join fellow presidential candidate Rick Santorum, who has never risen in the polls.

The television program's promo notes: "Both Santorum and Bachmann, two of the more consistent social conservatives in the field will be speaking to the Faith and Freedom forum [in Iowa] and speaking to Bob Schieffer on Sunday."

Update:

According to her campaign, Bachmann will also be speaking Sunday at Calvary Baptist Church in Oseola, Iowa at 11 a.m. Central Time. Her campaign said the speech will be aired live on CSPAN.