Polling stations are now closed, Chile does not allow exit poll results to be broadcast so all eyes are now on the official count, which you can follow on this link, the official State beancount website.
For what it’s worth, at presstime and with 6.5% of the votes tallied Michelle Bachelet has 45.13% and nearest rival Matthei has 24.78%. We know ‘Chelle will win, we want to know if she can make the 50%+1 vote barrier and wrap it all up today, in the first round.
UPDATE: It’s looking like Bachelet will not pass the finishing post today and we’ll need a second round run-off to sort things out. 20.31% of the votes counted and ‘Chelle is still at 46.11%. The sample is beginning to be big enough to be representative.
UPDATE 2: 69.51% of votes counted and ‘Chelle has 46.69%. Statistically it’s all over, this one is going to a second round, assuming of course that Matthei doesn’t throw in the towel.