Castro-Biden exchange is most-tweeted moment of debate

Former Housing and Urban Development Secretary Julián Castro had the most tweeted moment of Thursday night's debate with a pointed comment aimed at former Vice President Joe BidenJoe BidenGiuliani clashes with CNN's Cuomo, calls him a 'sellout' and the 'enemy' Giuliani says 'of course' he asked Ukraine to look into Biden seconds after denying it Trump whistleblower complaint involves Ukraine: report MORE that drew gasps and jeers from the live crowd and seemed directed at the former vice president's age.

Castro repeatedly asking Biden if he had forgotten what he said "two minutes ago" was the most-tweeted part of the debate, according to Twitter.

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"Are you forgetting what you said two minutes ago?" Castro asked Biden as the two battled over details of Biden's health care plan and whether people would be automatically enrolled in it. 

"Are you forgetting what you said two minutes ago?" Castro repeated. "I can't believe that you said, two minutes ago, that they had to buy in and now you're forgetting that. We need a health care system where you're automatically enrolled."

 

Biden leaned into Sen. Bernie SandersBernie SandersOvernight Health Care — Presented by Partnership for America's Health Care Future — Pelosi unveils signature plan to lower drug prices | Trump says it's 'great to see' plan | Progressives pushing for changes Krystal Ball calls on Sanders to follow Yang's lead on war on drugs Buttigieg calls Warren 'evasive' on Medicare for all MORE (I-Vt.) as Castro spoke, perhaps to ask what he had said. Some of Castro's remarks may have been difficult to hear over the noise of the crowd, which included a number of people expressing shock or displeasure with the remark.

After the debate, some Democrats called Castro's attack on Biden's memory too harsh and personal. 

Castro said it had just been a discussion about health care.

The second-most-tweeted exchange of the debate also featured Biden and a remark by the former vice president that seemed to speak to his 76-year-old age.

Biden, the 2020 Democratic front-runner, urged parents to "make sure you have the record player on at night."

 

Biden was tweeted about the most out of the 10 candidates on stage in Houston, followed by tech entrepreneur Andrew YangAndrew YangKrystal Ball calls on Sanders to follow Yang's lead on war on drugs Overnight Energy: Trump officials formally revoke California emissions waiver | EPA's Wheeler dodges questions about targeting San Francisco over homelessness | 2020 Dems duke it out at second climate forum Again, DNC debate moderators fail to ask about democracy issues MORE.

Yang generated interest after unveiling a proposed plan to give away $1,000 per month for a year to 10 families chosen at random.

Sanders was the third-most-tweeted candidate of the night, followed by Sen. Elizabeth WarrenElizabeth Ann WarrenOvernight Health Care — Presented by Partnership for America's Health Care Future — Pelosi unveils signature plan to lower drug prices | Trump says it's 'great to see' plan | Progressives pushing for changes Buttigieg calls Warren 'evasive' on Medicare for all Sanders hits 1 million donors MORE (D-Mass.) and Sen. Kamala HarrisKamala Devi HarrisTwo former Congressional Black Caucus chairmen back Biden Strippers, 'Hustlers' and the Democratic debates 2020 Dems honor Emily Clyburn MORE (D-Calif.).

Ratings for the debate on ABC will be available Friday afternoon.