Google, Facebook at center of rising political ad tensions

Facebook Inc. and Google were drawn into an escalating battle of wills Wednesday over the use of political advertising on social media.

Trump campaign officials pressured Facebook to maintain its permissive political advertising rules, while Alphabet Inc.’s Google announced an overhaul of how campaigns may target their messages across the world’s largest search engine.

The ability of candidates to show different messages to people based on their physical location, age, or other characteristic, referred to as micro-targeting, has become an increasing focus of the broader debate about political advertising online. Last month, Twitter Inc. said it will ban political ads on its platform altogether,