What to Watch for in the Debate

The last time Carly Fiorina was here, the former Hewlett-Packard chief ­executive sketched out her ­foreign policy blueprint. One thousand people heard her condemn the slow training of ­anti-Islamic State forces, the ambitions of China and the wonky “tooth to tail” ratio of military power to military bureaucracy.

Donald Trump will play the lead role in the second Republican presidential debate tonight -- but his rivals are jockeying to steal his spotlight.