Look at the Wikipedia entry on Dominion Voting…

https://en.wikipedia.org/wiki/Dominion_Voting_Systems

Dominion Voting Systems Corporation is a company that sells electronic voting hardware and software, including voting machines and tabulators, in the United States and Canada.[1] The company's international headquarters are in Toronto, Canada, and its U.S. headquarters are in Denver, Colorado. The company carries out in-house software development for its customers in the United States, Canada, and Serbia.[2]

Dominion was the subject of a hoax originated by followers of the far-right QAnon conspiracy theory, later spread by One America News Network, President Donald Trump, and Trump allies and supporters.They alleged that the company’s voting machines had been compromised, resulting in millions of votes for Trump being deleted or switched to votes for Joe Biden in the 2020 presidential election. Some made false claims that Dominion had close ties to the Clinton family or other Democrats.[3][4][5] There is no evidence supporting these claims, which have been debunked by various groups including election technology experts, government and voting industry officials, and the Cybersecurity and Infrastructure Security Agency.[3][5]