He found that the counting of these last 70 districts caused Trump's lead to go down by 14000, while Republican senator Toomey's lead went up by 4000. That is a basically impossible result, especially considering that Trump got more total votes in the state than Toomey.
Also: In the 99.24% of districts that reported earlier, 1.3% more people voted for president than senator. But in the 250000 votes from the last 70 districts, 7.5% more people voted for senator than president. This discrepancy is unbelievable.