An Act amending the act of June 3, 1937 (P.L.1333, No.320), known as the Pennsylvania Election Code, in preliminary provisions, further providing for definitions; in dates of elections and primaries and special elections, further providing for affidavits of candidates; and, in nomination of candidates, further providing for affidavits of candidates, for nominations by political bodies and for examination of nomination petitions, certificates and papers and return of rejected nomination petitions, certificates and papers.