Trump may hate her guts ... but Bernie Sanders says he's still got Ronda Rousey's back -- telling TMZ Sports he's rooting for her to get back to DOMINATING people ASAP!!!
The presidential candidate was out in D.C. when we asked if he had any advice for the UFC star -- who happens to be one of Bernie's biggest fans.
Check out the clip ... Bernie gives a pretty sweet little pump up speech ... and with Dana White announcing a target date for her rematch with Holly Holm, the timing couldn't be better.
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