Senator elect Manchin of West Virginia is being courted by the Republicans in the hopes that he will flip from Democrat to their side. The brilliant thing about this strategy is who is not playing.
While Manchin would probably fit in more with the Republican caucus than the Democrat one, it is still potentially viable. But if you are Manchin, think about what the message conveys - I am much more valuable than any other freshman senator. Harry Reid will be forced to offer some choice committees and support for Manchin's project for a plant that converts coal to diesel.
The Republicans in the meantime, can offer anything, because they won't have the necessary bodies to make a majority even with Manchin. Everynone wins, except for Harry Reid.