WASHINGTON, .D.C. (WABC) -- Hillary Clinton surged to a broad advantage against Donald Trump in the latest ABC News/Washington Post poll, capitalizing on Trump's recent campaign missteps.Two-thirds of Americans see him as biased against groups such as women, minorities or Muslims, and a new high, 64 percent, call Trump unqualified to serve as president.These and other doubts about Trump have produced a sharp 14-point swing in preferences among registered voters, from +2 points for Trump in mid-May, after he clinched the GOP nomination, to +12 points for Clinton now, 51-39 percent.That snaps the race essentially back to where it was in March.Adding third-party candidates Gary Johnson (Libertarian) and Jill Stein (Green) to the mix makes no substantive difference: a 10-point Clinton advantage, 47-37-7-3 percent among registered voters.Looking at those who say they're certain to vote in November likewise produces a very similar result: +11 Clinton in the two-way matchup, +9 in the four-way.The national poll, produced for ABC by Langer Research Associates, finds another apparent impact of Trump's problems: Perhaps benefitting from comparison, Barack Obama's job approval rating has gained 5 points, to 56 percent, matching its high since the early days of his presidency. That includes 55 percent approval specifically on handling the economy.Trial heats are hypothetical; they ask which candidate people would support if the election were today - which it isn't. At least as important are the underlying sentiments informing current preferences, and they show the extent of Trump's troubles given his recent controversial comments. Among them:--The public by 66-29 percent think he's unfairly biased against groups such as women, minorities or Muslims.--Americans by 68-28 percent think his comment about Judge Gonzalo Curiel was racist. Regardless of whether or not it was racist, 85 percent say it was inappropriate.--While most Americans disapprove of Clinton's handling of her email while secretary of state (34-56 percent, approve-disapprove), they're equally disenchanted with Trump's handling of questions about Trump University (19-59 percent, with more undecided).--Most generally, the public by 56-36 percent, a 20-point margin, says Trump is standing against their beliefs as opposed to standing up for their beliefs.