It is likely that both U.S. Sen. Lindsey Graham (R-South Carolina) and Louisiana Gov. Bobby Jindal will announce a run for the 2016 Republican presidential nomination in the next few weeks. Mr. Graham has already set an impressive bar for announcement hubris, stating, "I'm running because the world is falling apart." The addition of these two candidates will mean that the Republican field is transitioning from crowded to unmanageable. The confluence of having no clear frontrunner to take on likely Democratic candidate Hillary Clinton, the belief that the Republicans can win in 2016, the new campaign-finance laws and the political maturation of a generation of Republican politicians who are now in their 40s and 50s means that the field is unprecedentedly large. Many, but not all, of these candidates would be legitimate general-election candidates with a decent chance of winning.