Donald Trump nearly falls down on stage, then goes on angry tirade about it

Donald Trump appears more feeble, physically and cognitively, each time he appears in public. It’s gotten bad enough that his handlers keep finding excuses to cancel most of his campaign events. But for some reason they let him do a speech in Minnesota today, and suffice it to say that it went horribly for him.

Trump was dissatisfied with the way the stage was set up, and he became obsessed with it as his speech went on. At one point he nearly fell over, then angrily tried to blame his lectern and the people who assembled it:
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This is just getting said. Does anyone really think this guy is going to make it to November?