WASHINGTON—Trump campaign lawyer and former federal prosecutor Sidney Powell released an explosive affidavit on Nov. 16, from a whistleblower who purports to have witnessed how election software secretly manipulates votes without leaving a trace. The whistleblower—whose background is with the Venezuelan military, including the national security guard detail of the Venezuelan president—outlines a conspiracy between Smartmatic software executives, former Venezuelan dictator Hugo Chavez, and that country’s election officials, to ensure Chavez won reelections and retained power for years. The whistleblower said he was present at multiple meetings. “I was witness to the creation and operation of a sophisticated electronic voting system that permitted the leaders of the Venezuelan government to manipulate the tabulation of votes for national and local elections and select the winner of those elections in order to gain and maintain their power,” the affidavit states. “From that point on, Chavez never lost any election. In fact, he was …