 
 <translate> To answer this question, we should know that: The 26th Amendment (passed and ratified in 1971) set the voting age for federal and state elections at 18 years, but does not prevent states from establishing a lower voting age. Therefore, the final answer is 1971. <hau> Don amsa wannan tambayar, ya kamata mu san cewa: Kwaskwarima ta 26 (wanda aka zartar kuma aka tabbatar da shi a 1971) ya sanya shekarun jefa kuri'a don zaɓen tarayya da na jihohi a shekara 18, amma ba ya hana jihohi daga kafa ƙaramin shekarun jefa kuri'a. Saboda haka, amsar ƙarshe ita ce 1971. 