To vote for a proposed constitutional amendment, fill in the oval next to the word "Yes" on that question. Constitution of the State of Minnesota.Adopted October 13, 1857. To vote against a proposed constitutional amendment, fill in the oval next to the word "No" on that question. Below is an overview of constitutional amendment processes in the 50 states. I discuss the various possible ways of amending state constitutions. State Constitutional Amendments. Ratification was completed on February 27, 1951, when the thirty-sixth State (Minnesota) ap- proved the amendment, there being then 48 States in the Union. The house of representatives has the sole power of impeachment through a concurrence of a majority of all its members. The Equal Rights Amendment, more appropriately called the "Erosion of Rights Amendment," would diminish the hard-earned rights and protections of women.