Congress Congressional Elections HoR elections every 2 yrs. Senate every 6 Constituents- the residents of a congressional district or state House members must be must be 25 must have been citizen for 7 yrs. Senators must be 30 citizen for 9 yrs. Must live within state in which elected from house members don?t have to reside in district the senate was meant to be a check against the house because of this senators were elected by state legislators This was changed in 1913 by amendment( 17th I think) Both have unlimited terms District Lines each state has 2 senators reps # is determined by pop. redistricting takes place every 10 yrs, after census Reapportionment- the assigning by congress of congressional seats after each census 100 senators 435 house of reps