Partial (i.e., especially hard to detect) shadowbanning of individuals dissenting from the Democrat narrative or disillusioned with the Democratic party for various and unrelated reasons is rampant on Twitter. Examples from early September 4, 2018:
Adam Carter, a cyber-security researcher opposing the dominant conspiracy theory of Russian hacking of the DNC:
Brandon Straka of #WalkAway:
More in Censorship by GOOG,FB, TWTR is Alive and Well and Google and Twitter Censor non-Leftist Views Under Pretext of “Extremist Propaganda”.