This TV ad targeting Sen. Marco Rubio run by the main super PAC backing former Florida Gov. Jeb Bush’s campaign has kicked off new tensions between candidates, as it alleges that Rubio has flip-flopped on issues like Syria and immigration.
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In all the guff, an earlier, more serious TV ad from the pro-Bush super PAC got overlooked.

The ad features former TV anchor Ben Swann asserting that Rubio has missed many Senate votes, going back to the period before he launched his White House bid.

Swann previously gained notoriety by challenging official accounts of the Sept. 11, 2001, terror attacks and later challenging depictions of the April 2013 Boston Marathon bombing and mass shootings in Newtown, Connecticut, and Aurora, Colorado.

Pounder on Thursday responded sharply to that ad.

“Jeb Bush and his allies are so desperate to attack conservative leaders like Marco Rubio that they are using a noted 9/11, Boston Marathon and Sandy Hook (Newtown) Truther as the mouthpiece for their false attacks,” Pounder said in an email. “This is a new and sad low even for a flailing campaign and (shows) exactly why we need a new generation of leadership in Washington.”

James Rosen: 202-383-0014; Twitter: @jamesmartinrose