The vast majority of political contributions from Apple employees are directed to liberal candidates or Democratic Party-aligned organizations, according to a report released Thursday amid growing Republican concern over anti-conservative bias.

From 2014 through 2018, some 91 percent of overall donations from the Cupertino, Calif.-based company’s employees went to Democrats, research firm GovPredict found. Nearly 96 percent went to local Democratic committees, while 100 percent of the contributions went to liberal organizations.