The remarks by Conrad – who suggested Boehner and Obama “split the difference” on the income cutoff – were followed by similar ones from Republican Sen. Johnny Isakson.

The Georgia senator told ABC’s “This Week” he would support a bill that prevented tax increases only for the middle class, if that’s his last option.

“If we get down to the end of this year and the only choice we have is to save taxes going up on the middle class, then I would support that,” he said. “But I wish we would have a comprehensive bill that dealt with spending, dealt with entitlements and dealt with taxes altogether.”

Isakson said an agreement now on a more comprehensive package is “not realistic.”