Are politicians morally obligated to speak unequivocally, or do they have a practical right to be equivocal in order to he elected?

Yes, i believe they are morally obligated to do so

Equivocal speech refers to a form of speech that is ambigious and can be interpreted differently. Politicians should be morally obligated to ensure that he avoid such method of speaking because it cause confusion among people who trusted them with the position.