Booker and Oprah are famously friends, having been introduced by their mutual friend, Gayle King. Oprah has donated $1.5 million to Newark nonprofits and interviewed Booker on her television network.
This isn't the first celebrity that's offered a helping hand to Booker's Senate bid. Oscar-winning director Steven Spielberg and "Alias" actress Jennifer Garner, among others, gave thousands to the candidate last quarter, boosting his eventual haul to $4.6 million.
The celebrity friendships have opened him up to attacks from his opponents, who have accused him of spending too much time jet-setting to California and not enough working on Newark's problems. But Booker remains the front-runner in every poll of the race and is heavily favored to win in the Aug. 13 Democratic primary.
Democrats are expected to retain the seat in the general election.
Oprah hosting fundraiser for Cory Booker
By Alexandra Jaffe - 07/30/13 01:09 PM EDT