Answer:
two years
Explanation:
In simple words, Legislators of the chamber of Representatives hold two-year periods and are each year eligible for re-election. Though, Senators complete six-year limits but also Senate elections were distributed over equal cycles so that only around 1/3 of the Chamber is running for reelection in each year.
U.S. membership For every House of Representatives serves a part of their place regarded as something of a House seat, an population of 700,000. Nevertheless, senators serve the whole region.