This are honest questions. and all this questions are made in context and content. Do you know the Voting history? How it came to be? Why they had the rules they did? Why it went the way it did, and how we fixed it?
For example, the early days of voting. People where concerned just as they are today about outside interference. Voter fraud and the sorts.
How can a people who lived in a specific area had their votes counted and not be interfered? Remember that identification was not as easy to have as today. Solution?
Proof of Land ownership. This provided the people of the land to vote on who will represent them.
Freedom existed in greater terms in those days. The government did not got involved in everyday activities, people went on their lives and there where not many rules.
As rules and regulations began to be added, the government slowly began to creep in to individuals. Once the rules and regulations affected the way people lived, then people wanted the right to elect a person with their views to represent them. Thus Women and Black people wanted a say so. This took time to change.
It started with a government that was rarely involved with the individual to a government that regulated the way we live.