McCain tells interns it’s ‘Vice President Portman’

OVERHEARD: Sen. John McCainJohn McCainMcCain returning to Senate in time for health vote Senate Dems launch talkathon ahead of ObamaCare repeal vote Overnight Healthcare: Trump pressures GOP ahead of vote | McConnell urges Senate to start debate | Cornyn floats conference on House, Senate bills | Thune sees progress on Medicaid MORE (R) adding some fuel to the fire of constant veepstakes buzz surrounding one of his colleagues.

Sen. Rob PortmanRob PortmanUnhappy senators complain about healthcare process Thune: Progress being made on Medicaid 'wraparound' OPINION | They told us to abandon ObamaCare — then came the resistance MORE (R-Ohio) was giving a group of interns a tour of the Capitol on Thursday when McCain breezed by.

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The senior senator from Arizona quipped to Portman’s young crew, “Now you can say you interned for Vice President Portman.”

Portman is said to be on Mitt Romney’s shortlist of potential running mates.

— Elise Viebeck and Jeremy Herb 
contributed to this report.