That sound you heard?

That was the sound of the door slamming shut on all the other Republican presidential nominees:

News tonight: Jon Huntsman to quit presidential race, endorse Mitt Romney Links: http://www.washingtonpost.com/blogs/the-fix/post/jon-huntsman-to-quit-presidential-race/2012/01/15/gIQAwcwx1P_blog.html?wpisrc=al_comboNP; http://www.cnn.com/2012/01/15/politics/gop-campaign-wrap/index.html?hpt=hp_t1