Republican presidential candidate Trump gestures and declares Republican presidential front-runner Donald Trump continues to build momentum, both nationally and in key early states like Iowa. Case in point: A new Bloomberg Politics/Des Moines Register poll of the state, released over the weekend, which provided new reasons to treat his candidacy with seriousness. Trump is in first place in the poll, grabbing the votes of 23% of likely Iowa Republican caucus-goers. But most striking is how Iowa Republicans now view him in a highly favorable light — after feeling the opposite just three months ago. According to the poll, 61% of...