Replying to a comment Ghosting made alongside his card:
Yes, you got a point in each of the two preceding days' polls. However, the poll on the 1st of the month counts towards the previous month (since it's based on the date cards were submitted, rather than the date of the poll). So you got one point for May, and for the first poll that counts towards June, you have one point there as well.
Short version: the scores for a month are based on all cards submitted in that month.
Thanks for clearing that up, that makes sense.