Voting lines for the upcoming election in Texas are going to be long. If you get hungry could you have food delivered while you're waiting to cast your vote?
Perhaps this is a way DoorDash is trying to encourage some to reconsider before opting out of tipping the people driving here and there to deliver your order. Or maybe they just want to reward people who offer more compensation to their drivers. Whatever the case, it may be something you want to consider.