My version of democracy is allowing people to vote.
In a democratic republic such as ours every adult should have the right to vote regardless of their knowledge, race, class, wealth, or party. It is a central tenet of democracy that those that are governed have the right to choose who governs them.
What you are proposing is exactly what happened in Nazi Germany, USSR, Fascist Italy, and in ancient Rome, suppress the vote of those that do not vote the way you want them to vote because they lack the breeding, purity of race, the intelligence, or the proper education to select their leaders and address issues on national concern.
Tests to qualify for voting, making it more difficult for the targeted group to vote, intimidation, and misinformation have been time worn tactics.
I believe the failings in the country is not due to the people but the system that has evolved in Washington, the seniority system in congress, the filibuster, lack of elections laws to limit contributions, better controls on lobbying, etc...