Now that Democrat Cory Booker has won a U.S. Senate seat, a key question in coming months is what kind of senator he'll be.

Newark Mayor Cory Booker (Bennett Raglin, Getty Images)

As mayor of Newark, Booker has become known nationally. He has leveraged his 1.4 million Twitter followers and friendships with celebrities into his own fame.

But now he's moving from the top of the executive branch, albeit at a local level, to being one of 100 senators. New Jersey's other U.S. senator, Robert Menendez, says Booker will have to adjust.

Booker is replacing the late Frank Lautenberg, whose family endorsed a challenger in the primary and called Booker a "show horse."

During his election night speech, the 44-year-old Booker said there is "work to be done" on issues including equal pay for women and access to college.

 

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