Who would vote for representatives in the lower house

The House of Representatives of States, is the lower house of the United States Congress, while the upper house is the Senate. Each state obtains representation in the chamber proportional to its population, with the right to a minimum of one representative, who are elected by unitary majority scrutiny in most states and with non-partisan general primary with second majority in three states; The most populous state, California, has 53 representatives. The total number of representatives is currently set at 435 by the Reapportionment Act of 1929, although Congress retains the power to modify that number. Each representative is elected for a period of two years and may be re-elected.