With weeks to go before the Sept. 9 preliminary election, the math remains daunting for Boston mayoral hopeful Josh Kraft.

TAX TALK — Recent polling shows Michelle Wu crushing the competition in Boston’s mayoral race. Her campaign is still keeping up the pressure. A gaggle of campaign surrogates held a press conference outside the JFK federal building Tuesday, calling on Josh Kraft, Wu’s main competition in the race, to release his tax returns.

A new poll of likely voters suggests that Boston Mayor Michelle Wu will smoke her principal challenger Josh Kraft in this fall’s election.