SAN FRANCISCO — Jack Dorsey, Twitter’s chief executive, said on Wednesday that the social media service would ban political ads on its platform, in a stark contrast to rival Facebook, which has faced blowback for taking a hands-off approach to political advertising.
Twitter previously allowed political ads. After the 2016 presidential election, the company began requiring advertisers to verify their identities and it published a database of political ads that ran on its service. More recently, it banned ads from state-backed media outlets after it traced misinformation about the protests in the semiautonomous Chinese city of Hong Kong to state-backed media outlets in China.
The campaign of the former vice president Joseph R. Biden Jr. had asked Facebook to remove a false ad about Mr. Biden that was being run by President Trump’s campaign, and Senator Elizabeth Warren has called out Mr. Zuckerberg for running a “disinformation-for-profit machine.” Over the last two weeks, hundreds of employees at Facebook signed a letter to Mr. Zuckerberg asking him to reconsider how Facebook treats political ads.
This is a developing story and will be updated.