WASHINGTON: Two head-to-head polls released Sunday showed a resurgent Hillary Clinton vaulting atop the US presidential race after a tumultuous month for Donald Trump, who has failed to rally confidence among voters or party leaders. A Washington Post-ABC News poll showed a 12-percentage point lead for the Democrat, her largest advantage since last fall and a dramatic improvement over last month when the poll showed her statistically tied with Trump. If the presidential election were held today, 51 percent of respondents said they would vote for Clinton, versus 39 percent for Trump. However, a Wall Street Journal/NBC News poll showed a slimmer lead for Clinton, 46 percent to Trump’s 41 percent. They were essentially tied, 39 percent for Clinton and 38 percent for Republican opponent, when third-party candidates were included, this poll showed. The surveys come after a difficult month for the combative Trump, a political novice who fired his campaign manager and faced criticism for poor campaign organization and a paltry war chest of $1.3 million at the end of May. Clinton, who has repeatedly pounded Trump as being “temperamentally unfit,” finished the month with $42 million.