My suggestion is you contact your local district committee, and volunteer to be a poll-watcher. This way, you can kind of keep tabs on any shenanigans, as well as put the Dems on notice.
If you can't get the day off from work, volunteer for the early shift or the late shift at the polls.
Does anyone have a link to some list of local party offices that could take such volunteer?
Contact your federal, state, county and local legislators and assert why you
want to volunteer. If nobody knows you're ticked about this, what's the use?