On 30 June, the 26th Amendment to the U.S. constitution was ratified by Congress, thus lowering age in all elections to 18 years of age.
Citation:
Richert, Lucas Paul. "26th Amendment ratified".
The Literary Encyclopedia. First published 01 November 2008
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5685, accessed 20 May 2013.]