Okay...but couldn’t/wouldn’t the new majority be able to reverse everything they do?
With a majority of conservatives, yes. Just with a majority of republicans, no.
Think Snowe, Collins, McCain and others in the Senate. Here in Illinois our so called republican candidate for a Senate seat is Mark Kirk, more liberal than most democrats, he's wrong on every single issue, from Cap and Trade to baby killing, gun grabbing, every issue, bar none. How will anything ever be reversed with Senators like these?
The House is even more RINO than the Senate.