In a townhall meeting held Tuesday in Albuquerque, N.M., John McCain mistakenly referred to current events in Czechoslovakia, a country that ceased to exist in 1993 after separating into the Czech Republic and Slovakia.

McCain expressed "regret some of the recent behavior that Russia has exhibited...including reduction in oil supplies to Czechoslovakia."

The presumptive Republican presidential nominee said something similar in Phoenix a few days earlier. "I was concerned about a couple of steps that the Russian government took in the last several days. One was reducing the energy supplies to Czechoslovakia," McCain said.

The McCain campaign sent a transcript correcting the problem, substituting references to Czechoslovakia with the Czech Republic.

Liberal groups were quick to jump on the error.

"In fact, the former U.S. ambassador to Slovakia endorsed McCain's candidacy for president. Maybe he should offer the candidate some geography lessons too," Rachel Weiner wrote for The Huffington Post.

Ronald Weiser is the national co-chairman for McCain's campaign, who is a chief fundraiser for the Republican candidate.