As U.S. polling places opened last Nov. 8, Russian trolls in St. Petersburg began a final push on Twitter to elect Donald Trump.

They used a combination of high-profile accounts with large and influential followings, and scores of lurking personas established years earlier with stolen photos and fabricated backgrounds. Those sleeper accounts dished out carefully metered tweets and retweets voicing praise for Trump and contempt for his opponent, from the early morning until the last polls closed in the United States.

“VOTE TRUMP to save ourselves from the New World Order. Time to MAKE AMERICA GREAT AGAIN,” read one. “Last chance to stop the Queen of Darkness! Vote Trump!” urged another.

The Daily Beast analyzed a dataset of 6.5 million tweets containing election keywords like “Hillary” and “Trump” that was collected over 33 hours last Nov. 7-9 by Baltimore-based data scientist Chris Albon.