Depends who you are. Many liberals thought that implied he would do away with elections and make himself permanent ruler, but others assumed it was because it would be his second and final term, so it would be their last chance to vote for him specifically.
Don't get me wrong, Trump is a lying piece of shit, but he often doesn't think about his phrasing before running his mouth. It's certainly an ominous phrase, but, he may not have actually meant what many of us heard.