Twitter will ban political advertising on its platform next month, the company’s chief executive said on Wednesday, a move that won praise from Democrats and scorn from Donald Trump’s presidential campaign.

Analysts do not expect the ban, which takes effect on November 22, to significantly reduce Twitter’s business.

Social media companies, including Twitter rival Facebook face growing pressure to stop carrying ads that spread false information that could steer elections.

Facebook CEO Mark Zuckerberg opened his earnings conference call on Wednesday by defending the company’s policy to run ads from politicians containing false or misleading claims, saying that Facebook did not want to stifle political speech.

The company confirmed Monday that some employees had criticized its policy in an internal letter.