Story highlights Sources say Trump's campaign is now beginning its vice presidential discussion

It's only in its beginning stages

(CNN) Donald Trump's campaign is scrambling to ramp up its planning for the general election, including scraping together a list of potential vice presidential candidates, after Trump abruptly became the presumptive Republican nominee Tuesday night.

The Trump campaign, blindsided by rival Ted Cruz's sudden exit from the race, is now beginning internal deliberations about potential vice presidential candidates, two Trump campaign sources tell CNN.

The campaign will also begin coordinating immediately with the Republican National Committee to calibrate a general election ground game, including staff hires and deciding in which battleground states to deploy field staff, a senior Trump adviser said.

Trump campaign manager Corey Lewandowski told reporters Tuesday night before election results in Indiana drove Cruz out of the race that the campaign had yet to start vetting vice presidential candidates.

Trump confirmed Wednesday that his campaign is beginning to put together a committee to weigh in on his pick for running mate. The committee will include former presidential rival and now-Trump supporter Ben Carson, the former neurosurgeon's adviser Armstrong Williams confirmed to CNN.

Read More