"Our campaign strategy has always been to amass the maximum amount of delegates possible, and continuing work in state caucus-conventions is part of that," Paul spokesman Gary Howard said Thursday.

Even so, some Republicans strategists say such tactics are hurting the party and its efforts to unify for the general election.

"The bottom line is any attempt to gather more delegates (for Paul) is not likely to yield success," said Taylor Griffin, a GOP strategist at the Washington, D.C.-based Hamilton Place Strategies. "The only person it's going to help is Barack Obama."

This weekend, the Paul campaign appears to be eyeing 25 delegates up for grabs at the GOP convention in Nevada, where Romney won the state caucus with roughly 50 percent of the vote in February.

The notion that the Paul campaign might try to tinker with the Nevada delegate count has prompted the Republican National Committee's top lawyer to send a letter to the Nevada state party.