DES MOINES, Iowa (AP) —

The polls show him making some solid gains in Iowa in recent days, and Rick Santorum says he feels "very good" about how he's doing.

He told ABC this morning that he'll do 'very well" in tonight's caucuses. Santorum says, "We're going up." He says he also feels "very good about New Hampshire," where he says voters also "like this kind of politics."

Most polls in recent days have put Mitt Romney and Ron Paul atop the GOP field in Iowa, with Santorum third and gaining ground.

Santorum says voters in Iowa are "looking for the candidate they can trust" -- and he says that's why his poll numbers are improving.

The former Pennsylvania senator, who has tried to establish himself as the conservative choice, is acknowledging fundraising problems. But he says a strong showing in Iowa should help him significantly on that front.

Santorum is blaming the Ron Paul campaign for recorded phone calls questioning his policies on guns and abortion. Santorum told reporters at Fox News that "Ron Paul is disgusting."