Three months before the general election, why would a candidate claim that the election will be rigged? Either to foment unrest afterward, or to claim that he was robbed. In either case, the remark suggests that he expects to lose.
The high accuracy of poll aggregation acts as a safeguard against blatant fraud. In the last few weeks of the Presidential campaigns of 2004, 2008, and 2012, poll aggregates (including those served up here) gave the correct winner in all states where the poll median was more than 1% for either candidate. Polls for individual Senate races and national Congressional popular vote also do very well in Presidential years – thought less so in off-years like 2010 and 2014.
http://election.princeton.edu/
The high accuracy of poll aggregation acts as a safeguard against blatant fraud. In the last few weeks of the Presidential campaigns of 2004, 2008, and 2012, poll aggregates (including those served up here) gave the correct winner in all states where the poll median was more than 1% for either candidate. Polls for individual Senate races and national Congressional popular vote also do very well in Presidential years – thought less so in off-years like 2010 and 2014.
http://election.princeton.edu/
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