I'm pretty sure that at some point, my email address has been associated with my registration on the voter rolls because I've had a number of candidates email me for their campaign in my district, which, along with calling my phone number and leaving automated messages, makes my selection process easier by letting me remove them from contention...
But it's hard to not vote for somebody when their spam list isn't even properly constructed, such that they are spamming people who don't even live in their district.