Donald Trump's senior communications adviser Jason Miller said the past few days have been good for the Trump campaign. | Getty Trump spokesman: These 'have been very good days'

Despite flagging poll numbers in battleground states and feuds within the Republican Party, Donald Trump's campaign has been enjoying some "very good days" this week, one of the GOP's nominee's top aides said Friday.

“Specifically, as we talk about the last couple of days, they have been very good days. Mr. Trump has been driving his message. I think Hillary Clinton has been in a real bad spot with this Iran deal," senior communications adviser Jason Miller said during an interview with the "Kilmeade & Friends" radio show.


Host Brian Kilmeade pressed Miller on whether the campaign would have to reach out to Republicans like Ohio Gov. John Kasich, who declined to attend last month's Republican National Convention in his own state, as well as have Trump himself express support House Speaker Paul Ryan and Arizona Sen. John McCain.

“I think the ultimate thing is the contrast between Hillary [Clinton]'s record and Mr. Trump’s record," Miller responded, to which Kilmeade remarked that Trump is only polling in the 70s among Republicans, noting that Mitt Romney lost with 90 percent of the GOP vote in 2012.

Miller attributed Trump's performance among Republicans to messaging not "cutting through" on economic and national security issues, and he vowed brighter days are coming.

"And as those messages cut through and as we start talking about Supreme Court judges, we start talking about stopping illegal immigration, start talking about making the country great again, that’s when that number will go up," Miller said.

As far as the polls themselves, Miller suggested that the campaign is "still getting double digits with Democrats" and that "there are a lot of Democrats who are still disaffected and don’t like Hillary Clinton."

"She still has a lot of problems with the Bernie Sanders base," Miller continued. "And the one other thing, too, is the fundamental problem with Hillary Clinton’s candidacy, besides her bad judgment, terrible judgment, is the fact that 70 percent of Americans want a change in direction. They think we’re going in the wrong direction. And the Clinton-[Tim] Kaine ticket is firmly embracing that third term of Obama. That’s a dangerous place to be. There’s a lot of time to go in this race, and we’re going to take to ’em every single day.”

Asked whether there is anyone on the team who is able to tell the candidate that he is wrong or needs to fine tune certain parts of his messaging, Miller deferred to Trump's decades of business judgment.

“I think, look, Mr. Trump hasn’t gotten to be this successful in business without knowing how to read the lay of the land and how to analyze scenes and figure out what needs to be done here," Miller said. "He puts together a good team, he listens to his team, and ultimately he makes the decisions because his name is on the door and he is the leader.”