Here is why Manafort handing Trump's internal polling data to the Russians 'makes the case' for collusion: Clinton official - Raw Story

Responding to protestations from Rudy Giuliani, Donald Trump's legal adviser, that internal 2016 Trump campaign polling data handed off to the Russians by the president's former campaign manager was of negligible value, ex-Clinton White House spokesman Joe Lockhart told the hosts of CNN's "New Day" that not only was the former New York City mayor, it is the key to proving collusion.....
https://www.rawstory.com/2019/01/manafort-handing-trumps-internal-polling-data-russians-makes-case-collusion-clinton-official/