Mailing your ballot? Be sure to get a November 8th postmark. Late hour collection boxes on Election Day include two 7:00 pm pickup USPS blue collection boxes at 150 and 178 E 2nd Ave (between Crowley & Pine) in Spokane, and the 9:00 pm pickup USPS blue collection box at the Spokane Airport mail processing center, 2928 S Spotted Road. If you mail your ballot on Election Day, check to make sure that you will get a November 8th postmark with a scheduled pickup after you mail your ballot --- otherwise head to the 9:00 pm pickup USPS blue collection box near the airport. Be sure to affix first class (47 cents) postage to your ballot envelope.