CNN

Conservative attack group takes aim at Obama.

An old right-wing attack dog has returned with a new target: Barack Obama.

Starting Tuesday, a group of conservative activists led by Floyd Brown, author of the famous Willie Horton ad used so effectively against Michael Dukakis in 1988, will begin a campaign to tar Obama as weak on crime and terrorism, a strategy that aims to upend Obama's relatively strong reputation among Republican voters.

"The campaign by Hillary Clinton has not been able to raise Obama's negatives," said Brown on Monday. "It is absolutely critical that Obama's negatives go up with Republicans."

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