Why can't Dems presidential hopefuls pull this much people for any of their rallys? <20,000+

[KLAMarine]

sethnintendo said:

KLAMarine said:

You stated previously that you "haven't seen such fanatical support since a politician named Hitler." It's bull: Hitler took control of mass media, Trump has no such control as demonstrated by the regular slamming he gets from many media outlets. Trump Hitler outlawed all parties but the Nazi Party, other parties beside the Republican party still exist under Trump. Hitler was leader for life, the presidency only allows for two terms.

The two aren't comparable...

I was talking about support from his fan base.  No matter what he does he will always have that 35 to 40 percent.  He even said he could shoot someone and still not lose support from his fans.  

So what has he done that should cost him the 35-40%?