Tomorrow, the nation heads to the polls to decide who will become the 45th president of the United States.

In both 2008 and 2012 readers participating in our polls came close to matching the actual vote margins on election day. In 2008, they favored Barack Obama with 56% of the vote in our last pre-election survey, and he grabbed 53% of the actual tally. In 2012, the president received 59% of the MedPage Today vote, and 52% on election day.

Readers were slow to warm to the candidate Obama endorsed as evidenced by a yearlong slog.

In January, readers gave Hillary Clinton just 31% of the vote, compared to Bernie Sanders 27%. Still, the liberal leanings were on display among MedPage Today users in previous election cycles continued: Combined, Republicans drew less than 40% of the MedPage Today vote in January.

But all that changed in this final poll of the 2016 race, which closed early Monday morning. Donald Trump shot past Clinton in the closed days to claim a full 50% of the result. It's the first time any candidate cleared 50% of the vote this election cycle.

These surveys are not at all scientific. They merely represent a window into how our readers are thinking at any time.