If there was any doubt that Democrats worry the botched Obamacare rollout could hurt their 2014 prospects, a new ad from a top Democratic super PAC should erase it.

The ad from House Majority PAC praises Rep. Joe Garcia (D-Fla.) for taking "the White House to task for the disastrous health-care Web site."

The ad also praises him for supporting legislation to allow people to keep their health-care plans -- a reference to the Obama administration's repeated (and incorrect) assertions that people wouldn't lose their current plans.

The ad is similar to an ad the same super PAC launched last month for Rep. Ann Kirkpatrick (D-Ariz.). That ad said Kirkpatrick "blew the whistle on the disastrous healthcare Web site, calling it 'stunning ineptitude' and worked to fix it."

It's worth noting that neither ad is critical of the law itself -- and they actually promote certain aspects of it, including coverage for pre-existing conditions -- but instead they focus on a rollout that even President Obama has admitted was deeply flawed.

A spokesman for the group said the ads are its attempt to fight back against well-funded GOP attacks on the health-care law.

"With the Koch brothers spending huge amounts to mislead voters and distort Democrats' records, House Majority PAC will continue to stand up and prevent those charges from going unanswered," the spokesman, Andy Stone, said.

Another Democratic super PAC, Majority PAC, also launched an ad last month praising Senate candidate Rep. Bruce Braley (D-Iowa) for working to "fix the health-care law."

Republicans believe Obamacare is their ticket to gains in the 2014 election. The House is generally considered to be safe for the GOP, but Republicans have a shot at winning back the Senate.

Garcia and Kirkpatrick are among the most vulnerable Democrats in the House. Both races are rated as "toss-ups" by the Cook Political Report.

Updated at 10:08 a.m.