A glottal stop or flap are considered perfectly good allophones of /t/ in both positions you mention in Standard American English. While I oppose and disagree with both these political figures, I think you may be going out on a limb (pronounced without the /b/) with regard to dialectal differences. And don’t forget, that’s how the “fake sophisticates/real snobs” make fun of our leaders like Sarah Palin.
I think that Michelle Antoinette and Clintigula both exhibit hyper-correct grammatical errors like saying “him and I” which I do think are fair game, given their level of indoctrination. But again, I leave such prescriptive linguistics to the “elites”. I’m quite happy to stick with the country class, speech foibles and all.





