Clinton told supporters in Iowa that "words matter" regarding Trump's 2nd Amendment remarks
- Recent polls in four key industrial states show Hillary Clinton widening her lead.
- Hillary Clinton: Donald Trump's 2nd Amendment comments were a "casual inciting of violence"
- Voter reactions show the collapse of Trump's support
- Clinton works to court Mormon voters in Utah newspaper op-ed
- Tim Kaine will fundraise in Southern California later this month
Here's how to tell whether Donald Trump is doing his own tweeting
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