How many voting members are in the House of Representatives?

The House of Representatives is composed of 435 voting members. This number is established by law, specifically the Permanent Apportionment Act of 1929, which set the total number of representatives and determined the method for apportioning them among the states based on population. Each state's representation can change every ten years following the national census, but the total number of representatives remains constant at 435. This framework is essential to ensure that the representative democracy in the U.S. reflects the population distribution among the states, thereby allowing for effective governance.

In the context of the other options, 400, 450, and 500 do not align with the established number of voting representatives in the House, and these figures may reflect incorrect assumptions about the size and structure of congressional representation. Thus, recognizing that the correct number is 435 helps reinforce understanding of how representation in the U.S. government is structured.