I think he grabbed the evangelicals
Providence has been supporting his ascension every step of the way. Throughout his campaign over the past year, just after he says something politically incorrect, some horrible event happens to justify the tough line he has taken, like the murder of Kate Steinle by an illegal just after he said he would build a wall to stop illegals from bringing crime, and how the ISIS slaughters in Paris, Orlando and Nice have made the threat of refugee terrorism and the necessity of the 2nd Amendment very clear to average people.
To this point about the Orlando massacre, Christians who are devout have had expectations in the past that anything related to the homosexual agenda would be not just denied in law, but also denounced by the Republican Party because of the manifest immorality of their sexual behaviors. However, the events in Orlando have given Trump, as the spokesperson for the GOP, an opportunity to make affirmative statements of support for the basic human rights of gay people not to be murdered for their "identity" and not to be considered too effete to practice self-defense, without the Platform having to give them unlimited support for the rest of their agenda.
In his speech, he said, "As your President, I will do everything in my power to protect our LGBT citizens from the violence and oppression of a hateful foreign ideology." This very precise statement is about keeping the wholesale lynching of gays by islamists out of our nation. It is a rejection of shari'a law, and a protection of gays' rights to exist, to "pursue" happiness and to be left alone, without a promise to celebrate gay marriage, gay parenting, etc. It exposed the hypocrisy of the left, which is in love with the extremely oppressive nature of islamism.
Trump will get a lot of votes from lgbt's and their cheerleaders because of this absolute dichotomy between his position and Hillary's, hers and Huma's being to bring proponents and practitioners of shari'a law into our country by the millions, to lie about them and their intentions, and to sell out to the terror-supporting nations from which they come to inflict civilizational jihad on us.