The governor may veto within five days, besides Sunday, after it has been presented to him, any bill or resolution of which he disapproves, and a two-thirds vote of the members of both houses is required to pass over his veto.
Whenever the governor approves of the general purpose of a bill, but disapproves of some portion or portions, he may return the bill with his recommendations for amendment, and when it comes back to him, he may, whether his recommendations have been adopted or not, treat it as if it were before him for the first time.