The Kraft family is focused on more than football. Robert Kraft’s son, Josh Kraft, has left the Patriots franchise as he zeroes in on the Boston mayoral race, where early polling shows he’s trailing substantially to incumbent Michelle Wu.

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.

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