[MichaelCollins]

This comment makes no sense in the context of America. I guess you're from a country with some sort of Parliamentary system where governments are formed when a party is elected?

In America, parties aren't elected and don't form governments. Accordingly, an American political party cannot kick out a congressman, much less replace one. To remove a congressman requires a two third vote (from congress, not from a political party); this never happens in the modern era without a criminal conviction as the impetus. And nether congress or a political party can simply bring in a new congressman; you'd need another election for that.

[lostmsu]

It still can be done for the next term. AFAIK there is no limit on terms and people stay in congress far too long for my taste.