As that “great determinator” Super Tuesday quickly draws near, some new high-powered celebrity endorsements – as well as additional bolstering by loyal top-name supporters – are adding further rhetoric to the race.

Among the latest names to rally ’round a hopeful is Jack Nicholson, who on Monday revealed his support of Democrat Hillary Clinton on the Rick Dees in the Morning Show on Los Angeles’s Movin’ 93.9 FM.

Nicholson’s move, which puts him in the same league as longtime Clinton boosters Barbra Streisand and Danny DeVito, follows Sunday’s appearance by Oprah Winfrey at a Los Angeles rally for Barack Obama. (Also over the weekend, celebs including Scarlett Johansson lent their singing voices to “Yes, We Can,” a YouTube music video, supporting Obama.)

WENN