I've speculated a theory called the Law of Political Parity it goes like this:
When one party gets too many seats in the Senate they have to blow it, otherwise they'd have to make good on their campaign promises, which they don't really want to do. This law applied to both parties equally.
Then the solution is to send even more solid Conservative like Tom Coborn to the US Senate. Every vote to the right in the Senate futher marginalizes the damage RINO cowards like McCain/Garham/Warner can do. Pluse with Frist leaving MAYBE we get a real Senate Leader who will use his position to cut these clowns. You want to play footsie with the Demos Senaor, fine, NO campaing money, no Chairmainships, NOT a single bill you want will make it to the floor.. YOU are politicall dead to us Senator as long as you continue being more loyal to the Democrats then the ones who brought you.