In Massachusetts, one can get a license plate which supports particular charitable organizations. At renewal (every two years), these cost an additional $40 in registration fees, all of which gets paid to the charity which sponsored the specialty plate. (When initially registering with a specialty place, some of the additional cost goes to the state to administer the program and some to the charity, but on renewal all of the extra fee goes to the charity.) The payment is just an additional cost paid to the state when renewing, and the state handles forwarding the charity's payment to them.
When I purchase or renew a vehicle registration with one of these specialty license plates, does the portion of the registration fee which gets ultimately sent to the charity count as a Charitable Contribution which I can deduct on Form 1040 Schedule A?
Since I was asked what the receipt looks like, here's a redacted version of the receipt and certificate of title that the state sends. It lists the $40 "Special Plate Fee", but doesn't specify what charity it is for or whether it is deductible: