Because if enough people do that, it actually can result in that state not "doing what it always does."
Assuming voting for X is going to result in Y getting elected over Z "anyways" is not a good strategy for getting what you want.
Because if enough people do that, it actually can result in that state not "doing what it always does."
Assuming voting for X is going to result in Y getting elected over Z "anyways" is not a good strategy for getting what you want.