Maybe they bought an old mailing list and assumed you were still together. I occasionally get mail for my second ex and we've been divorced for over 22 years. Hopefully a mistake and not something nefarious.
She had lived with us prior to her passing, donated to the Republican Party, and voted Republican. Hence the reason for the flyer. Of course I receive Republican flyers, but this one floored me.
The address on the flyer was my current address, 15-20 miles from my former home of 41 years.