Answer:
So the citizens know what is going on and are not taken by surprise and taken advantage of by the politicians that do it for their own gain
Some serfs would run away to live in a town because they rebel against the main dude in the caste system and they no longer want to do all the hard labor while others get to live much richer and fuller lives because they just so happened to be born into the right family
Answer:
The Times, Places and Manner of holding Elections for Senators and Representatives, shall be prescribed in each State by the Legislature thereof; but the Congress may at any time by Law make or alter such Regulations, except as to the Places of chusing Senators.