Will the Republican Party split after the Presidential Election?

The Presidential Election is over. America is once again making history; like many others, I am overwhelmed by the fact that American has elected a black president.

Now, after the election, one thing that interests me as an outsider is: will the GOP, which has suffered bitter defeats, be split into two parties?
I am thinking of this because there are presently only two mainstream parties - the Democrats and the Republicans, and this means that if you are a right-leaning free market advocate, you probably have to support the GOP's stance against abortion and stem cell research, the latter of which is probably killing many lives; and if you are an evangelical Christian, you probably have to support its stance against environmental protection. This is evidently not healthy for a democracy, where people are supposed to be able to choose.

The 2008 Election witnesses the rise of Mrs Sarah Palin, but it seems apparent that if Mrs Palin continues to play a pivotal role within the Republican Party, it is bound to be heading for wrong directions which cause dismay to many who no longer want to see religious conservatism in the way of many important policies (which is precisely what is happening in the Islamic world), as well as to many more others in various parts of the world, and this would inevitably be disastrous. Sen. John McCain is a rare moderate who has thus far failed to win full support from the religious right. In view of this situation, will the Republican Party head even further into the right irrespective of global interests; or should it better split into parties for the sake of survival, so that you could be a social conservative while caring for the environment, or a pro-choice advocate while supporting government nonintervention of the stock market?

P.S. I feel too lazy to translate this piece, which I wrote for my blog, back into Chinese.

Nope as neither half of them can win a election unless they side with the Dems. As long as American Democracy is based on a plurality, unless there is a similar split in the Dem we can't see the GOP split.