Amendment XVII:

I chose this picture for a little humor yet still focusing on the fact that this amendment is tied in with Senators.

The Senate of the United States shall be composed of two Senators from each state, elected by the people thereof, for six years; and each Senator shall have one vote. The electors in each state shall have the qualifications requisite for electors of the most numerous branch of the state legislatures.

When vacancies happen in the representation of any state in the Senate, the executive authority of such state shall issue writs of election to fill such vacancies: Provided, that the legislature of any state may empower the executive thereof to make temporary appointments until the people fill the vacancies by election as the legislature may direct.
This amendment shall not be so construed as to affect the election or term of any Senator chosen before it becomes valid as part of the Constitution.

Here you have more things regarding voting! This amendment is explaining that each state has two senators that the people get to elect. The senator serves six terms and if the senator happens to leave then the governor chooses someone to fulfill that spot with the states approval. 

Here you have pictures of Missouri's senators Roy Blunt and Claire McCaskill I chose these two pictures to show who our two senators were here in the state.