If Deion Branch had a Hall of Fame vote ... he says Julian Edelman WOULD get in -- telling TMZ Sports the Patriots star IS a legit HOFer.
Of course, Deion is biased -- he played for the Pats for 7 years and was a teammate of Edelman's for a couple of 'em -- but, he still insists the guy belongs.
"He knows I'm all for it. Put my brother in. He has earned it ... Me, personally, I'm saying, 'Yeah. Put my brother in and let's do it!