Not sure about Sanders, but Clinton paid women less:
"Hillary Clinton’s presidential campaign has consistently paid its female staffers less than it has paid males, according to a Washington Free Beacon analysis of the campaign’s public payroll records.
In May, women on her staff earned 88 cents for each dollar that was earned by men. In June, the campaign staff grew by 55 employees and women fared even worse, earning just 87 cents for each dollar earned by men."
freebeacon.com/politics/hillary-clintons-campaign-has-a-gender-pay-problem/