In 2012 and the Obama blowout, it became really obvious. If you dug down into the numbers in the "key" states, you would find ticket splitting with Obama being the universal recipient at the top while the GOP was getting voted for down ballot (it seldom went the "other way" benefiting Romney). Such is highly unlikely in an innocent "machine error", to say the least. An honest error should split 50-50.
All it takes is a few % change in these states to make a huge difference, and it did. It helps immensely to have "the machine" on your side.
Sorry for not taking notes, but he claims Cruz's tactics will wear thin (he actually said Cruz was using Gestapo tactics - that soundbite will be replayed ad nauseum), that the Trump campaign would be filing complaints in some cases, but that all of that is secondary. Challenged on his claim that Trump would "have the nomination" by mid-May, Manafort clarified that by mid-May, the path would be clear, that Trump would be the presumptive nominee, even though not having yet locked up 1237 delegates.
Early in the interview, Manafort said that Trump wasn't quite as "shut out" of state delegate selection as the press would have the public believe. That Trump had good success in Alabama, and has set the stage for good success at the Nevada convention.
Manafort comes off as pleasant, not confrontational, cool, calm, and confident.
You are absolutely correct. The last fraudulent story I recall the goal was to have a 51/49 result and the machines were allegedly programmed to do just that the day before the election.