Yes. If you select any of the 4 original designs/colors in sizes Men's S-2XL or Women's S-L I am guaranteeing delivery before Christmas in the US.
For all of the other designs, I should still be able to get them to you by Christmas. The campaign closes Oct 9. I expect 2 weeks to get all the survey's back and by then the funds raised will be released to me. I will then place the order to make the shirts. That should take 3~4 weeks. That means shipping should start in mid- to late-November. In plenty of time for Christmas.