New York Sen. Kirsten Gillibrand, a potential contender in the 2020 Democratic presidential primary, said Tuesday she would no longer accept donations from the political action committees of for-profit companies.

Her prohibition includes contributions from PACs connected to trade associations and law firms, her spokesman Glen Caplin told Roll Call in an email, saying the goal was to “get corporate money out of politics.”

PAC money from labor unions is still welcome, Caplin said.

PACs have amounted to about 15 percent of Gillibrand’s donations over her career in the House and Senate, according to data from the nonpartisan Center for Responsive Politics. A majority of that political money, 65 percent, has come from business PACs.

Labor PACs represented about 14 percent of Gillibrand’s PAC dollars, while ideological or single-issue PACs amounted to more than 20 percent, the center’s data showed. She did not say that she would return past donations from corporate PACs.