Clinton meets with Warren amid VP speculation
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Hillary ClintonHillary Diane Rodham ClintonBiden's pick for vice president doesn't matter much GOP challenger seizes on outrage against Massie Juan Williams: Mueller, one year on MORE met with Sen. Elizabeth WarrenElizabeth WarrenDemocratic senators call on domestic airlines to issue cash refunds for travelers Biden's pick for vice president doesn't matter much Biden faces pesky enthusiasm challenge despite big primary numbers MORE (D-Mass.) on Friday amid a string of conversations with advisers aimed at closing in on a running mate, according to multiple reports

They met at Clinton's home in Washington, D.C., NBC's Monica Alba reported. The meeting reportedly lasted about an hour.
 
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It's the second time in recent weeks that Warren has visited the presumptive Democratic presidential nominee's home. Members of the media closely followed Warren's private meeting with Clinton last month after the Massachusetts senator formally endorsed her.

Warren wasn’t the only potential running mate who met with Clinton on Friday.

Colorado Gov. John Hickenlooper also met with Clinton at her D.C. home for about an hour, according to NBC News.

Late last month, the Democratic governor said he “briefly” spoke with the former secretary of State about her search for a vice presidential candidate while Clinton was in Denver.

ABC News reports that Clinton also met with Secretary of Housing and Urban Development Julián Castro. 

"On Friday, Secretary Clinton held a series of campaign-related meetings at her Washington home, including several about her vice presidential selection process," Brian Fallon, a Clinton campaign spokesman, said in a statement.

 
 
Some polls this week have shown a tight race between Trump and Clinton in swing states ahead of both parties' national conventions.
 
 
—Lisa Hagen contributed