Clinton widens lead over Trump nationally
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Hillary ClintonHillary Diane Rodham ClintonOvernight Defense: Trump declares border emergency | .6B in military construction funds to be used for wall | Trump believes Obama would have started war with North Korea | Pentagon delivers aid for Venezuelan migrants Sarah Sanders says she was interviewed by Mueller's office Trump: I believe Obama would have gone to war with North Korea MORE has widened her lead over Donald TrumpDonald John TrumpTrump nominates ambassador to Turkey Trump heads to Mar-a-Lago after signing bill to avert shutdown CNN, MSNBC to air ad turned down by Fox over Nazi imagery MORE in the latest national survey, with the presumptive Democratic presidential nominee now leading her Republican rival by 8 points. 

Clinton leads Trump, 49 percent to 41 percent, among registered voters in the NBC News/SurveyMonkey weekly tracking poll released Tuesday. Last week, she led by 6 points.
Clinton continues to lead when third-party choices are factored in, with Clinton at 42 percent, Trump at 36 percent, Libertarian Party nominee Gary JohnsonGary Earl JohnsonThe Hill's 12:30 Report — Presented by Kidney Care Partners — Trump escalates border fight with emergency declaration Former Mass. governor takes step toward Trump primary challenge GOP strategist says Virginia 'just got purple' MORE at 9 percent and Green Party candidate Jill Stein at 5 percent.
On the question of which candidate respondents think will win, regardless of whom they support, Clinton remains the favorite: Fifty-seven percent think she'll win, compared to 36 percent who think Trump will win.
Despite continued divisions in the GOP over Trump, a majority of Republican and GOP-leaning voters surveyed in the poll say Trump should be nominated at the party's national convention next month in Cleveland.
Sixty-seven percent of Republicans said Trump, the only candidate still on the Republican side, should be nominated, while 30 percent say someone else should be picked.
The latest polling comes as both candidates weigh their options for a running mate, with Trump on Monday sparring with Sen. Elizabeth WarrenElizabeth Ann WarrenNewsom endorses Kamala Harris for president Constitutional conservatives need to oppose the national emergency Poll: Sanders, Biden seen as most popular second choices in Dem primary MORE (D-Mass.), a potential Democratic vice presidential pick who campaigned with Clinton in Ohio.
The poll of 6,556 adults, including 5,818 registered voters, was conducted online June 20–26, with an overall margin of error of 1.8 percentage points and a margin of error of 3.4 points for the 1,582 registered Republicans.