is there anything more patronizing than the assumption that you will change your vote because you're convinced by the political philosophy of Beyonce?
If famous people and celebs did not have the power to influence we wouldn't care when they try to.
I don't think anyone really believes they will change anyone's vote but it may help swing it for those many millions who say they don't know how they will vote; 'these famous people you (may) respect are voting this way or that way so why wouldn't you?'.
And it probably helps to reassure those who think they have made up their minds knowing that others, famous people they (may) respect, agree with them.
As far as I am concerned; everyone has a right to a view and a right to try and influence others. people can choose to be influenced or not. If celebrity gives someone a greater audience, more influence, then good luck to them.