RadarOnline.com has exclusively learned that jailbird O.J. Simpson is hoping Hillary Clinton wins the White House — so she'll use her power to grant him a presidential pardon !

The Juice concocted the pitiful plan after his former pal, Republican candidate Donald Trump, publicly dissed him when he heaped praise on a recent report that he said got it "right" by uncovering evidence that proved Simpson was responsible for butchering ex-wife Nicole Brown and her friend Ronald Goldman.

Now, "O.J. is throwing his weight behind Hillary Clinton," his former manager, Norman Pardo, told Radar.

Simpson, who attended Trump's 1993 wedding to Marla Maples, is currently serving time in a Nevada prison for a 2007 kidnapping and armed robbery. Even though he is eligible for parole in October 2017, Simpson, 69, is relying on Clinton to pardon him in case there are any issues.

"He's so immersed in Hillary's campaign that he wants her camp to send him buttons and hats with her slogan, 'I'm with Her,'" revealed Pardo, who has a documentary in the works called O.J. Final Cut.