There is a very slight but still discernible indication that regions with a larger Jedi presence fell in favor of remaining in the European Union. Which makes absolute sense. After all, the Jedi led the fight against the Separatists during the Clone Wars, struggling to keep the Republic from splitting into isolated systems. While the few surviving Jedi did seek to destabilize the Galactic Empire after Palpatine seized power, it was always with the goal of forming a new republic and bringing balance to the Force.
With 72.2 percent overall turnout, I’m almost certain the Jedi voted, and voted for Remain. They tried. But alas, as Yoda taught us, do, or do not. There is no try.