C. Migration is the answer
The old political party machine used to assign voters to specific regions in order to influence elections. Voter registration could prevent this action.
Voter registration also called enrollment is the requirement that a person otherwise eligible to vote register (or enroll) on an electoral roll before they will be entitled or permitted to vote. Such enrollment may be automatic or may require application being made by the eligible voter. The rules governing registration vary between jurisdictions.
Answer:
A tropical depression is a tropical cyclone that has maximum sustained surface winds (one-minute average) of 38 mph (33 knots) or less. A tropical storm is a tropical cyclone that has maximum sustained surface winds ranging from 39-73 mph (34 to 63 knots).
1. The Senate Foreign Relations committee is a standing committee that reviews all legislation affecting international relations in the Senate
2. Sub-committee hearings might hear testimony from the Surgeon General or the President of General Electric
3. A bill which has already passed through the whole process and been signed into law is repealed by a Congress with a different political agenda.
