Newark Mayor Cory Booker (D) won't make his Senate bid official until after the state's gubernatorial election this fall, BuzzFeed reports.

"Not until after the governor's race. I'm really going to wait," Booker said

Booker filed paperwork for his campaign in January. But he suggested it would be wrong to overshadow state Sen. Barbara Buono, New Jersey Democrats' long-shot candidate against Gov. Chris Christie (R).

Sen. Frank Lautenberg (D) announced earlier this month that he would retire in 2014, clearing the way for Booker.