Republican presidential candidate Donald Trump motions to the crowd following a speech at a rally on May 26, 2016 in Billings, Montana.
Spencer Platt/Getty Images
Republican presidential candidate Donald Trump motions to the crowd following a speech at a rally on May 26, 2016 in Billings, Montana.
Now playing
05:54
With the nomination clinched, can Trump unify the GOP?
Green Party presidential nominee Jill Stein waits to be introduced prior to a press conference at the National Press Club August 23, 2016 in Washington, DC.
Win McNamee/Getty Images
Green Party presidential nominee Jill Stein waits to be introduced prior to a press conference at the National Press Club August 23, 2016 in Washington, DC.
Now playing
01:44
Jill Stein raises millions for recount
Former Democratic US Presidential candidate Hillary Clinton speaks to staff and supporters at the New Yorker hotel after her defeat in the presidential election November 9, 2016 in New York. / AFP / Brendan Smialowski        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
BRENDAN SMIALOWSKI/AFP/Getty Images
Former Democratic US Presidential candidate Hillary Clinton speaks to staff and supporters at the New Yorker hotel after her defeat in the presidential election November 9, 2016 in New York. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Now playing
02:14
Scientists urge Clinton to call for recount
LYNDEN, WA - MAY 07: Republican presidential candidate Donald Trump gives a speech during a rally at the The Northwest Washington Fair and Event Center on May 7, 2016 in Lynden, Washington. Trump became the Republican presumptive nominee following his landslide win in Indiana on Tuesday. (Photo by Matt Mills McKnight/Getty Images)
Matt Mills McKnight/Getty Images North America/Getty Images
LYNDEN, WA - MAY 07: Republican presidential candidate Donald Trump gives a speech during a rally at the The Northwest Washington Fair and Event Center on May 7, 2016 in Lynden, Washington. Trump became the Republican presumptive nominee following his landslide win in Indiana on Tuesday. (Photo by Matt Mills McKnight/Getty Images)
Now playing
03:25
Donald Trump's wild ride
Now playing
01:46
Trump's challenges in the Middle East
donald trump undocumented immigrants crime fact check origwx ty_00013807.jpg
donald trump undocumented immigrants crime fact check origwx ty_00013807.jpg
Now playing
02:47
Fact checking Trump on crimes by immigrants
Mark Makela/Getty Images/Lintao Zhang/Getty Images
Now playing
01:26
Trump vs. the tape on Obama and the protester
Now playing
01:28
Trump compares Clinton email probe to Watergate
Members of the Secret Service rush Republican presidential candidate Donald Trump off the stage at a campaign rally in Reno, Nev., on Saturday, Nov. 5, 2016. (AP Photo/John Locher)
John Locher/AP
Members of the Secret Service rush Republican presidential candidate Donald Trump off the stage at a campaign rally in Reno, Nev., on Saturday, Nov. 5, 2016. (AP Photo/John Locher)
Now playing
01:20
Donald Trump rushed off stage by Secret Service
AFP/Getty Images
Now playing
02:16
Trump reads letter from Patriot's coach at rally
US Republican presidential nominee Donald Trump speaks during rally at the Atkinson Country Club in Atkinson, New Hampshire on November 4, 2016.
Mandel Ngan/AFP/Getty Images
US Republican presidential nominee Donald Trump speaks during rally at the Atkinson Country Club in Atkinson, New Hampshire on November 4, 2016.
Now playing
01:56
Trump on US officials: 'What a group of losers'
donald trump nice and cool pensacola fl bts_00001523.jpg
donald trump nice and cool pensacola fl bts_00001523.jpg
Now playing
00:49
Trump's mantra in campaign's final week: Stay on point
donald trump nice to hillary clinton and democrats orig cm_00000000.jpg
donald trump nice to hillary clinton and democrats orig cm_00000000.jpg
Now playing
01:52
Audio of Trump praising the Clintons and Democrats
cuomo lewandowski hillary clinton email exchange newday_00002327.jpg
cuomo lewandowski hillary clinton email exchange newday_00002327.jpg
Now playing
01:28
Cuomo grills Lewandowski on Clinton email 'hypocrisy'
Now playing
00:10
This video is no longer available
Now playing
01:49
Meet the other Hillary Clinton and Donald Trump

Story highlights

Donald Trump's list of potential vice presidential nominees is "very small," a top aide says

Trump's two top aides on Sunday downplayed a reported rift between them

Washington CNN —  

Donald Trump has narrowed his potential running mates to a “very small” list, his top aide said Sunday.

In an appearance on “Fox News Sunday,” Trump campaign manager Corey Lewandowski – who is leading the vice-presidential search process – said the vetting team has “started to shrink down that pool.”

“I can say that the list is very small and we have a very good understanding of who those handful of individuals will be and ultimately the decision will be made by Mr. Trump,” Lewandowski said.

He said the final decision will be up to Trump, the presumptive Republican nominee, but aides are now identifying the strengths and weaknesses of each option.

“What we are doing right now is making sure that we’ve done our due diligence so that when he chooses the person he wants, we can give him the pros and cons of each of those individuals…. so we feel very good where we are in the process,” Lewandowski said.

In an appearance on ABC’s “This Week,” Trump campaign chairman Paul Manafort said Trump “wants a vice president who knows Washington, is able to deal with the Congress and could be viewed as somebody who could be president.”

He deflected a question about whether potential selections will be asked to turn over their tax returns – a hot-button issue given Trump’s refusal to make his tax returns available to the public.

“The list of candidates that he will be considering will be fully vetted. The exact process we’re not talking about,” Manafort said.

Both Manafort and Lewandowski insisted the two work well together, despite reports of clashes between the two most powerful figures in Trump’s camp.

“Paul and I have a fantastic relationship. We work together closely every day,” Lewandowski said.

He said it is “very, very important to know that there is no sunlight between Paul and I.”

Manafort said he and Lewandowski are “cohesive and working together,” even after Rick Wiley – an aide brought in by Manafort – departed the campaign.

Manafort also downplayed a New York Times report that some Trump campaign staff believed their Trump Tower headquarters was bugged.

“No, I don’t believe it,” Manafort said. “But I don’t know who said that.”