Marty Walsh was at home Tuesday night watching the election results for Boston's mayoral race when he turned to his wife and said, "I bet it would be funny if I got a call tonight from the White House."

Ten minutes later, the phone rang.

It was a White House operator. Walsh, a former aide to U.S. Senator Edward M. Kennedy who is familiar with the White House connection process for congratulatory calls, tried to warn the operator that they had the wrong guy.

Moments later, a Washington area code popped up on his phone.

Vice President Joe Biden quickly congratulated who he thought was former state legislator and now Mayor-elect Marty Walsh.

"Son of a gun, Marty!" Biden said. "You did it."

Mr. Walsh called into "New Day" Thursday to talk about the event.

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