Representatives are elected every years presidents every years and senators every years?

Answer 1

Representative seats are contested every two years. The Presidency is contested every four years. Senate seats are contested every six years, staggered out every two years (so 33 senators, then 33 two years later, then the last 34, then repeat)

Answer 2

I believe Governors run every six years (it varies from state to state) and Congress and Senate seats are up for grabs every two years.