Niall Stanage @ The Hill:
Donald Trump's campaign for the White House is teetering amid
dismal poll numbers, racially tinged controversies and a rising chorus of criticism from within the GOP.
After knocking Sen. Ted Cruz (R-Texas) out of the primary in May,
Trump picked up momentum and made strides in unifying the party.
But the presumptive Republican presidential nominee has failed to pivot to general election mode and is now in his third straight week of bad headlines.
Not surprisingly, the angst in the Republican Party is intensifying...