The details: The debate showed how far to the left Democrats have moved since 2016. Here are seven takeaways, as well as video highlights. We also kept track of how long each candidate spoke (some of them in Spanish).

Immigration: Julián Castro, the former mayor of San Antonio, repeatedly brought up his proposal to decriminalize illegal immigration, at one point asking Beto O’Rourke, a fellow Texan, why he would not support making it a civil offense.

Economy: Asked whether her plans risked hurting the economy, Senator Elizabeth Warren said the economy was “doing great” for a “thinner and thinner slice at the top.”

Biggest geopolitical threat: Several said climate change, some said China or Russia, and Gov. Jay Inslee of Washington said Donald Trump.

Reaction: Veteran campaign strategists and consultants on the left and on the right weighed in. We also fact-checked some of the candidates’ claims.