Donors are a big source of the sexual harassment that fundraisers face on the job, according to polling results released today by the Chronicle of Philanthropy and the Association of Fundraising Professionals.

Two-thirds of people who reported sexual harassment on the job blamed donors, while the rest said misconduct came from colleagues, mostly those in senior positions.

About one in four female fundraisers has experienced sexual harassment in their careers, according to the poll, while only 7 percent of male fundraisers have. Almost all the harassers — 96 percent — are men, according to the study, which was conducted online in February by the Harris Poll. That data is in line with other estimates of the extent of harassment in U.S. workplaces...