Constitution of the State of Delaware, Art. III, § 18. Approval or veto of bills, orders, resolutions votes;  repassage over veto

(a) Every bill which shall have passed both Houses of the General Assembly shall, before it becomes law, be presented to the Governor;  if the Governor approves, the Governor shall sign it;  but if the Governor shall not approve, the Governor shall return it, with objections, to the House in which it shall have originated, which House shall enter the objections at large on the journal and proceed to reconsider it.  If, after such reconsideration, three-fifths of all the members elected to that House shall agree to pass the bill, it shall be sent together with the objections to the other House, by which it shall likewise be reconsidered, and if approved by three-fifths of all the members elected to that House, it shall become a law;  but in neither House shall the vote be taken on the day on which the bill shall be returned to it.  In all such cases the votes of both Houses shall be determined by yeas and nays, and the names of the members voting for and against the bill shall be entered on the journal of each House respectively.  If any bill shall not be returned by the Governor within 10 days, Sundays excepted, after it shall have been presented to the Governor, the same shall be a law in like manner as if the Governor had signed it, unless the General Assembly shall, by final adjournment, prevent its return, in which case it shall not become a law without the approval of the Governor.

(b) For purposes of return of bills not approved by the Governor the General Assembly shall be considered to be continuously in Session until final adjournment and the Clerk of the House of Representatives and the Secretary of the Senate shall be deemed proper recipients of such returned bills during recess or adjournment of the General Assembly other than final adjournment.

(c) No bill shall become a law after the final adjournment of the General Assembly, unless approved by the Governor within 30 days after such adjournment.  The Governor shall have power to disapprove of any item or items of any bill making appropriations of money, embracing distinct items, and the part or parts of the bill approved shall be the law, and the item or items of appropriation disapproved shall be void, unless repassed according to the rules and limitations prescribed for the passage of other bills, over the Executive veto.

(d) Every order and resolution to which the concurrence of both Houses of the General Assembly may be necessary, except on a question of adjournment and those matters dealing solely with the internal or administrative affairs of the General Assembly, shall be presented to the Governor, and before the same shall take effect be approved by the Governor, or being disapproved by the Governor, shall be repassed by three-fifths of all the members elected to each House of the General Assembly, according to the rules and limitations prescribed in the case of a bill.