Some people boarded a bus for Hubert H. Humphrey. Others passed out campaign buttons for Richard Nixon. Young Republicans and young Democrats chose their favorite candidates and supported them in streets and shopping centers. Still others ate clams and attended expensive $100-a-plate fund-raiser dinners. These folks were part of politics around Schenectady in 1966 and 1968. Voter drives began during late summer and ran into the middle of fall, when fortunes were bolstered or busted on Election Day.