Rudolph Giuliani cleverly understands that the best way to appeal to the Republican base is with militarism rather than morality. Says Glenn Greenwald:

"Giuliani's talent for expressing prosecutor-like righteous anger towards 'bad people' – as well as his well-honed ability to communicate base-pleasing rhetoric towards Islamic extremists – is underappreciated. I don't think any candidate will be able to compete with his ability to convey a genuine hard-line against Middle Eastern Muslims and that is the issue that – admittedly with some exceptions – dominates the Christian conservative agenda more than gay marriage and abortion (concerns which he can and will minimize by promising to appoint more Antonin Scalias and Sam Alitos to the Supreme Court, something he emphasized... in a highly amicable interview with Sean Hannity).