What did the men who would be president talk about during last week’s prime-time Republican debate? Well, there were 19 references to God, while the economy rated only 10 mentions. Republicans in Congress have voted dozens of times to repeal all or part of Obamacare, but the candidates only named President Obama’s signature policy nine times over the course of two hours. And energy, another erstwhile G.O.P. favorite, came up only four times.