Because men could be drafted into the military when they were 18, it was deemed unfair that the legal voting age was 21. The Twenty-Sixth Amendment lowered the voting age to 18 so that those eligible for the draft would still have a voice in the nation's decisions.
Amendment 26
According to the 26th amendment, the legal voting age is eighteen.
21 to 18
Lower the voting age from 21 to 18.
Twenty-sixth amendment
it lowered the voting age to 18
44th
it expanded the definition of citizenship to include voting rights for younger adults
It gave the vote to 18- to 20-year-old citizens.
The twenty-sixth amendment, ratified in 1971, set the minimum voting age at 18
Twenty-sixth Amendment of the Constitution of Ireland happened in 2002.
In 1971 it lowered the age from 21 to 18. Since that time adulthood starts at 18.