The Democrats running for governor pledged to run a clean and positive campaign, but that pledge seems to have gotten in the way of winning. Now the gloves are off.

Jared Polis didn’t like the tone of an ad from a group called “Teachers for Kennedy,” which attacked him over his support of a pilot program for school vouchers years ago.

Vouchers are government money to help pay for kids to go to private school and they’re wildly unpopular with liberals.

Now, Team Polis has two ads hitting back at Kennedy: one from Polis’ official campaign and another from a group called “Bold Colorado.”

Like Teachers for Kennedy, Bold Colorado is the state equivalent of a super PAC and is allowed to accept unlimited donations as long as it doesn’t coordinate with Polis.

Despite the ban on coordination, the Polis campaign and his group of supporters sing a remarkably similar tune.

> CLICK HERE for a 9News Truth Text report evaluating the new ads.