Dick Costolo: The CEO of Twitter, he took his company public to great success.
Sheryl Sandberg: The Facebook COO spent this year encouraging women to lean in.
As always, TIME's editors will choose the Person of the Year, but that doesn't mean readers shouldn't have their say. Cast your vote for the person you think most influenced the news this year for better or worse - in both a straight yes/no poll and a candidate face-off. Voting closes at 11:59 p.m. on Dec. 4, and the combined winner of our reader polls will be announced on Dec. 6. TIME's Person of the Year will be announced Dec. 11.
Dick Costolo: The CEO of Twitter, he took his company public to great success.
Sheryl Sandberg: The Facebook COO spent this year encouraging women to lean in.