Janison: There was one thing the candidates agreed on

In their first debate Tuesday tonight, Democrat Bill de Blasio and Republican Joe Lhota differed not on whether, but how, they’d retool Michael Bloomberg’s City Hall.

For months, de Blasio has slammed Bloomberg’s handling of police searches, charter schools, prevailing-wage levels, tax incentives and the city’s response to Superstorm Sandy.

For his part, Lhota disputes de Blasio’s rhetoric on schools and police — but has his own objections to the municipal status quo.

“I too want a change in the city government,” he said last night. “We can no longer have a City Hall that doesn’t listen to the outer boroughs.” Minutes later, Lhota termed Bloomberg’s recent statement about how billionaires pay for city government “quite insensitive.”