After the passage of the Twenty-sixth amendment, which group of citizens is automatically excluded from the right to vote

After the passage of the twenty-sixth amendment the group of citizens which are automatically excluded from the right to vote were people under the age of 18, so minors. The passage of the twenty-sixth amendment stated that people of the age of eighteen and over were allowed to vote, when previously only people of twenty-one and over were allowed to vote. This is in part because of the student activism due to the Vietnam War.