The Senate is currently composed of 51 Republicans, 47 Democrats, and 2 independents, both of whom caucus with the Democrats.

Answer this question based on the passage: what is the majority party in the senate? Okie... think carefully first, then make a decision:
The important part for answering this question is: The Senate is currently composed of 51 Republicans, 47 Democrats, and 2 independents, both of whom caucus with the Democrats. So, the answer is Republicans.