When you support someone, you must have faith in that person that he will win.
Your faith carries energy. You cannot believe in Jesus, and then secretly tell your friend Allah will rule. This kind of support is hollow.
Your prediction, if correct, may make you look smart. But it does not have the quality to change results. It's faith that will make you strong, give support to the object of your faith and change the events. It doesn't matter if you appear stupid to some.