I expect there'll be a rather politically popular movement afoot to amend the Iowa Constitution in order to overturn the Iowa Supreme Court's same-sex marriage decision. (The court, after all, was applying the Iowa Constitution that was enacted by the people of Iowa; the people of the state of Iowa are entitled to change the constitution just as they were enacted to enact it in the first place.) But amending the Iowa Constitution is a slow process -- here are the relevant state constitutional provisions, from Article X of the constitution (some line breaks added):
§ 1. Any amendment or amendments to this constitution may be proposed in either house of the general assembly; and if the same shall be agreed to by a majority of the members elected to each of the two houses, such proposed amendment shall be entered on their journals, with the yeas and nays taken thereon, and referred to the legislature to be chosen at the next general election, and shall be published, as provided by law, for three months previous to the time of making such choice;On the road for the next few days, and not sure I'll be able to blog more until next Tuesday.
and if, in the general assembly so next chosen as aforesaid, such proposed amendment or amendments shall be agreed to, by a majority of all the members elected to each house, then it shall be the duty of the general assembly to submit such proposed amendment or amendments to the people, in such manner, and at such time as the general assembly shall provide;
and if the people shall approve and ratify such amendment or amendments, by a majority of the electors qualified to vote for members of the general assembly, voting thereon, such amendment or amendments shall become a part of the constitution of this state....
§ 3. At the general election to be held in the year one thousand nine hundred and seventy, and in each tenth year thereafter, and also at such times as the general assembly may, by law, provide, the question, "Shall there be a convention to revise the constitution, and propose amendment or amendments to same?" shall be decided by the electors qualified to vote for members of the general assembly;
and in case a majority of the electors so qualified, voting at such election, for and against such proposition, shall decide in favor of a convention for such purpose, the general assembly, at its next session, shall provide by law for the election of delegates to such convention, and for submitting the results of said convention to the people, in such manner and at such time as the general assembly shall provide;
and if the people shall approve and ratify such amendment or amendments, by a majority of the electors qualified to vote for members of the general assembly, voting thereon, such amendment or amendments shall become a part of the constitution of this state.
If two or more amendments shall be submitted at the same time, they shall be submitted in such a manner that electors may vote for or against each such amendment separately.