McCaskill's campaign said it will pursue legal action in connection with this incident. The campaign is also asking for Attorney General Josh Hawley - McCaskill's Republican opponent - to appoint a special prosecutor to investigate violations of the state's Merchandising Act.
McCaskill staffer Nick Starost is heard speaking in the video.
"So what were you telling me last night about Planned Parenthood?" a voice behind the camera asked.
"How they never - they don't donate to Claire because they don't want to ostracize pro-life Democrats in Missouri," Starost replied.
Conservative site's hidden camera prompts McCaskill outrage
Good Luck With That Claire
McCaskill staffer Nick Starost is heard speaking in the video.
"So what were you telling me last night about Planned Parenthood?" a voice behind the camera asked.
"How they never - they don't donate to Claire because they don't want to ostracize pro-life Democrats in Missouri," Starost replied.
Conservative site's hidden camera prompts McCaskill outrage
Good Luck With That Claire