Quinnipiac pollster: 'Red flags' in Trump campaign
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Hillary ClintonHillary Diane Rodham ClintonTrump mocks 'elites' at campaign rally Trump backs down in rare reversal Election Countdown: Family separation policy may haunt GOP in November | Why Republican candidates are bracing for surprises | House Dems rake in record May haul | 'Dumpster fire' ad goes viral MORE is moving up in the polls, while there are red flags for the Donald TrumpDonald John TrumpFamily immigration detention centers could be at capacity within days: report Trump likely to meet with Putin in July: report DOJ requests military lawyers to help prosecute immigration crimes: report MORE campaign, said Tim Malloy, assistant director of the Quinnipiac University Poll. 

"Her numbers have been gradually going up. There's been a lot of missteps by Trump that have helped her, but she's been moving up in the polls," Malloy said on John Catsimatidis's radio show "The Cats Roundtable." 

"There's something significant going on — this shuffling of campaign staff with Trump. There are red flags with the Trump campaign right now, there's no doubt about that," he said of the Republican presidential nominee. 

Trump's former campaign manager, Paul Manafort, recently resigned, and Trump brought on two new people — Kellyanne Conway as campaign manager and Breitbart News executive Steve Bannon as campaign CEO — to helm his bid. 

Clinton, the Democratic presidential nominee, currently leads Trump by 6 percentage points nationally, according to the RealClearPolitics polling average.