Who's got my six?

Not Hillary.

Bernie.

Asked again whether she would expand Social Security benefits, Clinton conceded that she would expand benefits for some of the program's poorest beneficiaries, specifically citing widows and single women.

"I want to enhance the benefits for the poorest recipients of Social Security,” Clinton said. 

“We have a lot of women on Social Security, particularly widowed and single women, who didn't make a lot of money during their careers and they are impoverished and they need more help from the Social Security system."

Sanders, by contrast, has introduced a bill that would expand Social Security across the board and increase its solvency by lifting the cap on earnings subject to Social Security payroll taxes.

Responding to Clinton, Sanders said the reason he so strongly supports expansion is because he believes current benefits are inadequate for the vast majority of seniors.

“My view is, when you have millions of seniors in this country trying to get by -- and I don’t know how they do -- on 11, 12, 13 thousand dollars a year, you don’t cut Social Security, you expand it," Sanders said. 

"And the way you expand it is by lifting the cap on taxable income so that you do away with the absurdity of a millionaire paying the same amount into the system as someone making $118,000.”