As Christina mentioned yesterday, MoveOn is targeting the conservative Democrats in the Senate suggesting they may vote with Republicans to filibuster a health care bill.

Radio ads will run in Arkansas and Louisiana, directed at Sens. Blanche Lincoln (D-AR) and Mary Landrieu (D-LA). You can hear the Landrieu ad below.

Accompanying the radio spots will be a broader direct mail campaign aimed at Lincoln and Landrieu, but also at Sens. Ben Nelson (D-NE), Kent Conrad (D-ND), and Olympia Snowe (R-ME), the only Republican on the list.

Lincoln, Landrieu, and Sen. Evan Bayh (D-IN) will also be faced with polling data showing that the public option is popular among their constituents, who do not want to see them obstructing the passage of a reform bill.