A new TV ad running in Louisiana from Americans for Prosperity focuses on how the Affordable Care Act, aka Obamacare, has negatively affected citizens' lives. Democratic senator Mary Landrieu, who voted for Obamacare in 2010, is up for reelection in Louisiana this year.

The ad features three people receiving letters in their mailboxes, with voiceovers from each reading out their letters informing them of changes to their insurance policies due to Obamacare.

"Dear Ms. Davis," says one voiceover as a woman retrieves her letter. "We can no longer offer you the same policy. Your doctor's no longer in the network, due to the Affordable Care Act."

"Send Senator Landrieu a message," the ad states at the end. "Obamacare is hurting Louisiana families." Watch the ad below:

According to Americans for Prosperity, the ad will air on Louisiana television starting Wednesday and for the next three weeks. The organization is spending $750,000 to run the ad in every media market in the state.

Since the start of 2014, Landrieu and other Democratic senators up for reelection this year have been hit hard with ads like this, particularly from Americans for Prosperity. “The reason I think 2014 could be more difficult for liberals is the law has hurt a lot of people,” the group's president, Tim Phillips, told THE WEEKLY STANDARD last month.

Landrieu is considered one of the more vulnerable Democrats in 2014. A recent Rasmussen poll showed her strongest Republican challenger, House member Bill Cassidy, leading her by four points.

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