I never claimed that all voters (for that candidate at least) would know beforehand exactly what actions s/he would take once in office. But it is their respon

I never claimed that all voters (for that candidate at least) would know beforehand exactly what actions s/he would take once in office. But it is their responsibility to know what they're voting for, and if they're stupid enough to believe vague or impossible campaign promises, that's entirely on them.