WASHINGTON — Joe Biden entered the Democratic primary promising “from day one” to reject campaign cash from lobbyists.

“I work for you — not any industry,” he tweeted.

Yet hours after his April campaign kickoff, the former vice president went to a fundraiser at the home of a lobbying executive. And in the months since, he’s done it again and again.

It’s difficult to quantify how much Biden has raised from the multibillion-dollar influence industry, but the roughly $200,000 he accepted from employees of major lobbying firms is far more than any of his rivals has received, according to a review of campaign finance data by The Associated Press.

Though it is a small fraction of the $21.5 million he reported raising in the second quarter of 2019, the money demonstrates a comfort with an industry that is the object of scorn of Democratic activists and some of Biden’s principal rivals.

Biden’s pledge applies only to federally registered lobbyists, and most of the money tracked by the AP was from others in the influence industry. But thousands of dollars did come from federally registered lobbyists, and Biden’s campaign said it is returning such donations.

That includes roughly $6,000 in contributions his campaign accepted from six federally registered lobbyists, including representatives of Google, aerospace and defense giant Lockheed Martin, and pharmaceutical companies, records show.