De Blasio's broken relationship with NYPD could cost New York the DNC's 2016 convention

Party officials are concerned the bad blood might still be an issue when the convention is held in 2016, stealing the spotlight from the party’s presidential nominee, a top Democrat told the Daily News.

“They’re worried about the optics,” said the source, who is familiar with the Democratic National Committee’s deliberations.

“Will [the police] turn their backs on the mayor? They don’t want side stories. The story should be the convention.”

The timing could not be worse for City Hall, as the national party is expected to pick a host city in the next few weeks.