The Boston City Council president and city clerk are splitting acting mayor duties this week while Mayor Michelle Wu takes a family vacation in Maine.

With the city’s preliminary election closing in, Boston Mayor Michelle Wu holds a nearly 30-point lead over her nearest challenger, according to a new poll. Wu leads philanthropist and community activist Josh Kraft 59%-29% in the new Boston Globe/Suffolk University poll out Monday.

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 post Wu has comfortable lead over Kraft,