Republican presidential candidate Mitt Romney may have to go on the defensive Tuesday night when the GOP candidates come together on what has been called Romney's home turf in New Hampshire to debate the economy.
The latest Gallup poll shows Romney in the lead among Republican voters, followed by Herman Cain in second, and Texas Gov. Rick Perry in third place.
In several new videos posted on the Internet, Perry has been stepping up his attacks against Romney.
"Even the richest man can't buy back his past," Texas Gov. Rick Perry's campaign said in a web video that describes Romney as the inspiration for President Barack Obama's national health care overhaul.
Romney said in a campaign like this, he expects opponents to try to use his own words against him.
"For some people in campaigns their process is one of obfuscation and bewilderment," Romney said Monday when he visited a Veterans of Foreign Wars hall.
"You're going to find in a campaign like this people running against me who will take what I said and try to say something else. There's an ad out there today that does that," he said.
He was referencing Perry's ad, which interspersed images of Romney and Obama talking about health care.
Tuesday night's debate is sponsored by the Washington Post and Bloomberg News. It starts at 8 p.m. Eastern.