Sens. Cory Booker Cory Anthony Booker3 reasons why Biden is misreading the politics of court packing Bipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility MORE (D-N.J.) and Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.), as well as former Housing and Urban Development Secretary Julián Castro, saw the clearest gains in their favorable ratings after the first night of NBC's two-night Democratic primary debate.

In a set of two polls from Morning Consult and FiveThirtyEight, one taken before Wednesday's first round of debating and one taken afterwards, Warren, Castro and Booker both saw considerable gains in their favorable ratings, while their unfavorable ratings barely moved.

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Warren, who went into Wednesday's debate with a favorable rating of 63.4 percent, is now viewed favorably by 72 percent of the Democratic electorate, according to the polls.

Booker, who has trailed Warren and other front-runners in the Democratic primary since his announcement earlier this year, saw his favorable rating tick up more than 10 points, from 47 percent to 57.4 percent, according to the polls.

Castro, also one of the lesser-known candidates before Wednesday's forum, saw his favorable rating rise from 29.3 percent to 47.4 percent.

Other candidates also saw double-digit gains in their favorable ratings following last night's debate, including Rep. Tim Ryan Timothy (Tim) RyanNow's the time to make 'Social Emotional Learning' a national priority Mourners gather outside Supreme Court after passing of Ruth Bader Ginsburg Lincoln Project hits Trump for criticizing Goodyear, 'an American company' MORE (D-Ohio) and former Rep. John Delaney John DelaneyCoronavirus Report: The Hill's Steve Clemons interviews Rep. Rodney Davis Eurasia Group founder Ian Bremmer says Trump right on China but wrong on WHO; CDC issues new guidance for large gatherings The Hill's Coronavirus Report: Kansas City Mayor Quinton Lucas says country needs to rethink what 'policing' means; US cases surpass 2 million with no end to pandemic in sight MORE (D-Md.), but those candidates largely saw concurrent gains to their unfavorable ratings as well.

Booker, by comparison, saw his unfavorable ratings rise by just 2.7 percentage points, according to the polls, while Warren's rose by just half a point. Castro's rose the most, 3.6 points, but that still was eclipsed by his double-digit gain in his favorable rating Wednesday night.

Morning Consult–FiveThirtyEight's first poll was conducted from June 19 to June 26 among 7,150 likely Democratic voters, and had a margin of error of 1 percentage point. The second poll was conducted June 26–27 among 1,233 respondents who responded to the first poll, 678 of whom watched round 1 of the debates. The margin of error for the second poll was 3 percentage points.