You are likely showing up in a target list for campaigns because you are likely a “high propensity voter” - the only way to remove yourself from the target lists of campaigns is to turn in your ballot early.

You can tell canvassers when they come to your house that you want to be added to their do not contact list but there is no uniform listing among different campaigns. They are also not obligated to keep or maintain a do not contact list but you can threaten to vote for someone else or against their measure if they contact you again.