(a) Every bill enacted shall be signed by the presiding officer of the house in which the bill originated and transmitted to the governor. If the governor signs the bill, it shall become law. If the governor vetoes the bill, it shall be returned to the presiding officer of each house of the legislature with a statement of the reasons for the veto. The governor may veto an item, section, or part in an appropriation bill and sign the remainder of the bill; provided that the governor may not veto an item, section, or part governing the manner in which an appropriation may be expended if any appropriation affected by the item, section, or part is approved.
(b) The governor shall have twenty days in which to consider appropriation bills and forty days in which to consider other bills. If the governor fails either to sign or veto a bill within the applicable period, it shall become law.
(c) A bill or an item, section, or part of a bill vetoed by the governor may be reconsidered by the legislature. The legislature shall have sixty days from the receipt of the governor’s veto message in the house of origin of the vetoed bill, item, section or part of a bill to reconsider the vetoed legislation. If two-thirds of the members in each house vote upon reconsideration to pass the bill, item, section or part, it shall become law.
(d) Any appropriation bill, or any bill affecting spending authority, government financial management, or organization of the government, enacted in the period between a regular general election and the second Monday of January of the following year shall be void unless enacted by the affirmative vote of three-fourths of the members of each house of the legislature.