If Gingrich’s White House run is to harm his legacy, it won’t be because he stayed in the race too long. It will be from starring in Democratic attack ads this fall that hurt the Republican presidential nominee as well as House members running for re-election. I bet he will star in two such ads.

The first will attack House members for supporting Paul Ryan’s budget plan that courageously attempts to put our fiscal house in order. Gingrich called it “radical” on “Meet the Press” at the very start of his campaign. Democrats will surely use Gingrich’s words to slam Republican House members. You can just hear the ad declaring over ominous music: ”Even Newt Gingrich called the plan ‘radical.’”

The second ad will likely focus on Mitt Romney’s business experience, using Gingrich and the pro-Gingrich super PAC Winning the Future’s outrageous Michael Moore-style attacks against Romney’s business career earlier in the race to highlight that even Republicans said Romney’s business practices were rapacious and unseemly. Or as Newt himself suggested during the campaign, Romney engaged in “looting” as head of Bain Capital.

And it is not like Gingrich’s words are going to be used unfairly or that his attacks were legitimate. They won’t and they weren’t.