AN ACT PROVIDING THAT CONTRIBUTIONS TO CANDIDATES WHETHER IN CASH OR IN KIND, BE CONSIDERED AS DEDUCTIBLE EXPENSE FROM GROSS INCOME FOR PURPOSES OF COMPUTING THE TAXABLE INCOME, AMENDING FOR THE PURPOSE REPUBLIC ACT NUMBERED SEVENTY-ONE HUNDRED ANDSIXTY-SIX, ENTITLED 'AN ACT PROVIDING FOR SYNCHRONIZED NATIONAL AND LOCAL ELECTIONS AND FOR ELECTORAL REFORMS, AUTHORIZING APPROPRIATIONS THEREFOR, AND FOR OTHER PURPOSES