DES MOINES — Sen. Bernie Sanders dismissed recent attacks from Hillary Clinton on Monday night regarding his inability to work with Republicans and break through gridlock in a divided Congress.

In a last ditch chance to speak to a large swath of voters before the Iowa caucuses, Sanders told CNN's Chris Cuomo that despite being the most progressive member of the Senate, he has consistently been able to work with Republicans to reach common ground.

Sanders pointed to his work with John McCain to overhaul healthcare for veterans and the number of amendments he got passed during his long career in both the House and Senate.

"I am probably the most progressive member of the U.S. Senate. But I have over the years not only in the Senate, but in the House — worked with Republicans when there was common ground." Sanders said. "When I was in the House in a number of years, I got more amendments passed on the floor of the House working with Republicans than anyone else — I was No. 1 or No. 2. in the Senate."

"Just a couple of years ago in a dysfunctional Congress, I worked with people like John McCain, people like [Florida Republican] Rep. Jeff Miller in the House to pass the most comprehensive veterans healthcare legislation in the modern history of the United States of America," Sanders pressed. "I have worked with Republicans when there is common ground throughout my career."

Lately, Clinton has upped the ante against the Vermont socialist, telling voters in Iowa last week that Sanders will run into gridlock time and time again, specifically if he tries to overhaul Obamacare in favor of his single-payer, Medicare-for-all healthcare system.