Ocasio-Cortez rallies progressives against Dem leaders' bid to shield incumbents from primary challengers

Freshman Reps. Alexandria Ocasio-Cortez and Ayanna Pressley have in a matter of days rallied the progressive base against a plan by House Democrats' campaign arm to isolate and discourage would-be challengers from running against incumbents in congressional primaries.

Ocasio-Cortez, D-N.Y., and Pressley, D-Mass., both insurgents who ousted entrenched members of their own party, over the weekend criticized a policy by the Democratic Congressional Campaign Committee (DCCC) to blacklist political firms that work against sitting members of Congress.

Their cause has been promoted and cheered by allies on the left, exposing...