House and Senate leaders are chosen by their party caucuses (so the party that holds the majority of seats chooses the majority leader and the Speaker of the House, while the party in the minority chooses the minority leader).
Chosen by drawing lots, elected by the people of the state they are representing
The Speaker of the House and the President of the Senate.
seniority
speaker of the house, majority leader, minority leader. boom.
They are chosen by the leaders of the house and senate.
senority
popular vote
elected by the members
presiding officers of house and senate the members of the congress
Unsure answer: The speaker of the House is responsible for keeping order in the chamber and leading the sessions of congress.
The presiding officers of Congress maintain order and moderate debates. The choose who will speak and they count the votes.
The House of Representative numbers are chosen by the population of the state. Each state gets one representative in the house for every 40,000 inhabitants of their own state. The Senate numbers aren't based on population. Every state gets 2 representatives in the senate.