A young-voter advocacy group backing Vice President Kamala Harris is launching a campaign on TikTok meant to target young voters — but not necessarily those backing former President Donald Trump.

The Green Party candidate has around 1 percent of the vote, which Democrats fear could disrupt the razor-thin margins in this year's election.

Democrats are arguing in a new pitch to swing state voters that a vote for Green Party nominee Jill Stein would only help elect former President Trump. An ad released Thursday says Stein was “key” to Trump’s victory in the battleground states in 2016 that clinched him the presidency and is “not sorry” for it,

Stein is only polling near 1 percent in most polls, but Harris advisers fear even that margin could prove decisive in race against Trump.

Ohio Secretary of State Frank LaRose’s office disqualified the Green Party presidential nominee after getting a withdrawal letter from Stein’s running mate. But Stein’s campaign claims the letter was written behind the candidate’s back.

The ad comes as the Harris campaign has repeatedly accused Stein of being “propped up” by Republicans in an attempt to swing the election in Trump’s favor.

The ad cites reporting out of the Wall Street Journal that says Republicans are boosting Stein and quotes Trump saying he likes Jill Stein.

The DNC said the ad would air on television in Michigan, Pennsylvania and Wisconsin, as well as on cable in the rest of the country. It did not disclose how much it would spend on

The non-major-party vote is likely to be small this year, but as 2016 showed, every vote matters in battleground states.

The Globe reported last month that Jefferson Thomas, a longtime GOP operative who heads a firm called the Synapse Group, had submitted signatures for Stein in several New Hampshire municipalities.

A war for the margins has raged quietly this year between Democrats, who tried to keep third-party and independent candidates off the ballot, and