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$1M Crossroads ad buy targets Obama, Ben Nelson

President Obama and Sen. Ben Nelson (D-Neb.) are about to become the latest targets in a barrage of television attacks ads emanating from Crossroads GPS, a conservative outside group formed by former Bush Karl Rove.

Ads knocking Obama over his administration's efforts to bolster Solyndra, a failed solar energy company that has become a White House headache, will start airing nationwide on Monday night, the group announced. Crossroads has spent $500,000 to buy time on cable networks.

Crossroads has reserved another $500,000 of ad time in Omaha, Neb., and Lincoln, Neb., for ads attacking Nelson, a spokesman confirmed.

Read more on The Hill's Ballot Box blog.