"People are doing what they're doing because they want to defeat her before she has a chance to win," Republican operative David N. Bossie told the Los Angeles Times. "You can't hold off your silver bullet to the end."
The newspaper said the various groups aiming at the Clinton campaign say they aren't working together. Many admire the Swift Boat veterans that worked against the presidential campaign of John Kerry.
Clinton's spokesman, Howard Wolfson, dismissed the early anti-Clinton work.
"One thing people know about the Clintons is they know how to fight back," Wolfson told the Times.
'SNL': 'Anchorman 2' cast, One Direction sing 'Afternoon Delight' [VIDEO]
Trader Joe's: Car crashes into Long Island store, injuring 11