So, in this hypothetical we have a time machine, and can see not just if Dems lose but also what the consequences of that loss are. Further GOP court-packing? Loss of human rights for other vulnerable groups? Or maybe just a continuation of the status quo? With the time machine, we would know. Because the Dems winning or losing is not a good or evil in itself, but the consequences could be.
But, real word time now, we can’t know all the consequences of our actions. We should always try to achieve the best results we can, of course, but you can’t do something you know is wrong (like stay silent on trans rights) in the hopes that an evil now will lead to a greater good later, or prevent a greater evil. That’s my take, but what else can you expect from a virtue ethicist?