In preliminary provisions, further providing for definitions; in county boards of elections, furth er providing for powers and duties of county boards; in preparation for and conduct of primaries and elections, further providing for manner of applying to vote, persons entitled to vote, voter's certificates, entries to be made in district register, numbered lists of voters and challenges and for ballots to be issued by election officers only, ballots not to be removed and official ballots only to be deposited or counted; in voting by qualified absentee electors, further providing for applications for official absentee ballots, for date of application for absentee ballot, for official absentee voters ballots, for voting by absentee electors and for canvassing of official absentee absentee ballots and mail-in ballots; in voting by qualified mail-in electors, further providing for applications for official mail-in ballots, for official mail-in elector ballots and for voting by mail-in electors.