Mike Pence says he'll release tax returns soon

Republican vice presidential candidate Mike Pence said on a radio program Saturday that he will release his tax returns soon, amid calls by critics for Donald Trump to do the same.

Pence said on WABC radio's "Election Central with Rita Cosby" that the public would not be surprised by the information in his tax records.

"When my tax returns are released it's going to be a quick read ... the Pences have not become more wealthy as a result of sixteen years in public service," Pence, the governor of Indiana, said.

Click through images of Mike Pence's acceptance speech:

Pence said he would release his tax records soon. Trump has said he would release his tax returns but has not done so, saying it is because he is under audit. The IRS has said that wouldn't prevent him from releasing his tax returns.

Trump spokesperson Hope Hicks said Saturday: "Mr. Trump is undergoing a routine audit. When the audit is complete, he plans to release his returns."

Democratic rival Hillary Clinton and her supporters have used the issue to attack Trump. Democratic vice presidential candidate Tim Kaine on Saturday said "Even Richard Nixon released his tax returns."

Pence on the radio program dismissed Trump's sagging poll numbers, saying the only poll that matters is election day. "I truly do believe Donald Trump is going to be the next President of the United States," he said.