I think we can confidently say at this point that the riots most certainly have NOT helped Trump.
This probably is too D friendly, but just toss it on the pile with the rest.
Elliott Morris has suggested that there may be a partisan non-response effect occurring (i.e. Republicans are discouraged and less likely to answer polls), in which case this would likely be a temporary bump. But it could also be the start of a real shift.
Not since Reagan in 1984 have we seen anyone get 55% of the popular vote for President. The last time that a challenger got 55% of the vote against an incumbent President was 1932... when FDR trounced Hoover.
