Speaking on “Fox News Sunday,” Louisiana Gov. Bobby Jindal, chair of the Republican Governors Association, again repudiated Mr. Romney’s recent comments that he was unsuccessful in the Nov. 6 election because of “gifts” from the Obama administration to certain blocs of voters.

“I absolutely reject what he said. … You don’t start [to reach out to to voters] by insulting people, saying their votes were bought,” Mr. Jindal said.

Mr. Jindal appeared on the program with another popular rising star in the party, Wisconsin Gov. Scott Walker, vice chairman of the RGA. The duo is helping to lead the effort to rebrand the GOP, which continues to lose ground among minority, young and female voters.