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

Boston Mayor Michelle Wu is leading Josh Kraft by 30 points with about a month to go before the first ballots are cast in the city's preliminary election.

The poll of 500 Boston voters likely to participate in the Sept. 9 preliminary election showed a wide gulf between Wu and Kraft, who drew 30 percent support to her 60 percent.