You stated she wanted Dukakis to be President. That means it's up to you to provide evidence of that assertion not evidence that she was a democrat. We all know that.
I'll be here when you find that evidence.
Sure, she donated to his party five days before an election where he was heading the ticket, but that isn't evidence she wanted him elected. People donate right before an election, well, because it's just the fall colors are so pretty, it gets them in a generous mood.
At any rate, I her ideology is really a side issue. Fact is, no nominee so utterly lacking in competence should ever be nominated, regarless of her ideology.
Ideology is no substitute for competence.
New Jersey was plenty Democratic when I was there for a few decades, and my father was chummy with some of the biggest money grubbers in the state. The only money the Dems got from our family was when they beat it out of Dad at the poker table.
If Miers donated to Dems, it wasn't because she was surrounded and held up.