Not a bumper sticker, but the other day on the bus here in Honolulu, an old white guy boarded wearing a cap reading, “Trump.” At one stop, a young white lady, as she was getting off, told him, “I like your cap.” Morons.
I have seen about ten vehicles with Trump bumper stickers.
The two Hillary stickers have both been vandalized.
This is North Idaho.
I’ve seen a few Trump hats. All on retired white guys that have working-class SS disability recipient written all over them.
The pickup truck bumper sticker crowd seems to be mostly 20-40 yo construction worker types. Not oldsters.
Was behind a car with a knock-off “Calvin peeing on Ford logo” sticker (which granted is its own knock-off, so double-knock-off?) of Trump peeing on the word “Democrats”.
Maybe I’d have felt worse if Clinton wasn’t on track for a decisive win. Probably not, though 
You see an old white guy here, the first thing I think is retired military.