I have observed that roughly 10 years is the threshold.
Ten years (says 2 Senate terms which is 12, still roughly 10!) and you start becoming more interested in preserving the DC “status quo”. In short your constituency is the “Beltway Crowd” not your home constituency.
Some politicians arrive desiring to serve that “Beltway Crowd (preserve the current DC status quo”!) they are called Democrats. Others arrive and have it seep into their “pores” by being there too long (roughly 10 years) they are called Republicans.
The only solution is Term Limits”
2 terms in the Senate (12 years) then must sit out a full term to regain eligibility,
6 terms in the House (12 years) then sit out 3 terms (6 years) to regain eligibility,
During the period of ineligibility the politician needs to go home, run for mayor, county commissioner, governor or even “Dare I say it?” , get a job in private industry !
But GO HOME and see what the effects were back home on the "folks" given 10 years of the politician’s governing “wisdom”.
The average politician who is capable of honest self-relfection will be shocked !
Senators should be elected as originally defined, but if we are going with a popular vote instead, then limit their terms.
National office should be short term service to represent the interests of the people and state than sent them there, not a lifetime career of self interest.
This is a lib magazine but a decent article about how people come from where we live and become beltway insiders and never return. They are bought and paid for by power and money.
When Dr. Coburn was in the US House he voluntarily term limited himself to only 3 consecutive terms. He has also stated that he will only serve 2 terms in the Senate.