On average incumbents in Congress are reelected 90 to 95% of the time. That means that they are in power for life. This means elections are meaningless.
This happens because of the money advantage. Incumbents get more money from special interest groups that want to buy legislation. It is routine for an incumbent to outspend their opponents 4 to 1 or more.
So it’s no surprise that the job approval rate of Congress is 15 percent.
That’s not democracy.