The president of the senate is the Vice President of the United States- currently it is Joe Biden. More often, however he is represented in the senate by the president pro tempore.
He can vote only to break a tie in the senate.
The 15th amendment gave men the right to vote and the 18th amendment gave women the right to vote.
The state legislature are responsible for drawing the boundary lines.
The state legislatures are the ones that are primarily responsible for the redistricting process. They draw the boundary lines for each of the electoral districts.
This is applicable in about 25 states, while in some other states, the state governor is the one in charge of this process.
The redistricting process is the process of dividing areas into newer political districts.
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