A lost letter (1977)

The plot take place in 1883 in a small provincial town in Romania, where the corrupt establishment decide everything, including - of course - who will be the "elected" representative to the national Senate. A love letter from the bachelor mayor to the wife of the local party chief, gets lost and found by a drunk party supporter. The letter finds its way to the opposition party, which decide to use the letter by blackmailing the powerful local "camarilla", and to get his own man to represent the county. What follows is not easy to guess...