President Trump has lost ground with his base of voter support, white Americans, in swing states while not increasing his support with Hispanic and black Americans, New York Times/Siena College polls show. The polls of six battleground states, released this week, come as racial tensions have swept the nation with the Black Lives Matter movement leading riots, protests, and the destruction of historical monuments in major cities. Conservative circles have speculated that voters may not be expressing their actual opinions to pollsters. Trump’s administration has been laser-focused on messaging specifically to black Americans, with daily social media posts from the...