Hillary Clinton will announce her entry into the 2016 presidential race today, Sunday April 12, the New York Times reports. Clinton is expected to begin her campaign with a video message on social media, followed by visits to early primary states in the days ahead.

Clinton has dominated the Democratic field in early polling for the 2016 nomination, usually earning over 60% support and leading her prospective rivals by an average of almost 50% in the last 5 national polls, 270toWin has calculated. 

While Clinton enters the 2016 race as a prohibitive favorite, it is worth noting that she was the presumed front-runner at this same time in 2007, polling about 35-40%, about 10% ahead of a not-yet-well-known Senator from Illinois. On the Republican side, Rudy Giuliani was seeing twice as much support as John McCain.

Looking ahead to November, 2016, there has been some polling on Clinton vs. a number of prospective Republican nominees. We're tracking those with a series of electoral maps*. 

*We are creating a non-Flash version of our interactive electoral maps to provide a much better experience for the growing percentage of 270toWin visitors viewing the site from a mobile device. You should start seeing this map in the next few weeks.