Go here to view a slide show on the evolution of Paricutin prepared by Scott Rowland. Sources of Information: Foshag, W.F., and Gonzalez-Reyna, J., 1956, Birth and development of Paricutin volcano: U.S. Geological Survey Bulletin 965-D, p. 355-489.
In 1971, the Twenty-sixth Amendment set the legal voting age at 18 for both US federal and state elections.
At least 17 1/2 years of age to register and 18 to vote. You can pre-register at 16, but you have to be 18 by election day to vote. 18 on or before next election. Must be at least 18 years of age by Election Day; 17 years of age to vote in a General Primary if individual will be 18 as of the following General Election.