The Washington Post reports:
Sen. Bernie Sanders (Vt.), a longtime independent, signed a pledge Tuesday saying he would seek the presidency as a Democrat and govern as a Democrat if elected.
The move comes in response to a new rule from the Democratic National Committee that requires all candidates for the party’s 2020 presidential nomination to sign such a pledge — a change that some Sanders allies considered a swipe at the senator.
Sanders, who caucuses with Democrats in the Senate and has said he will support the Democratic presidential nominee in 2020 no matter how the nominating contests go, has frustrated some in the party by remaining politically independent.
Yesterday Sanders also formally filed his intent to run for reelection to the Senate in 2024 as an independent. Shrug emoji.