Investigations of vote fraud don't go along at the pace you'd personally prefer.
I'm not an attorney, nor do I play on TV, but I've seen enough episodes of "Law and Order" to understand that investigations are typically done prior to presenting a case in court.
There have been 30+ court cases - if I were a judge, and one side's attorney said to me "I'd love to answer your question, your honor, but we're still investigating", I'd pitch that attorney out of court.
As has been done 30+ times (and counting).
Let the lawyers and judges do their jobs.
They have been.
All the opposing attorneys and judges say the exact same thing - "no evidence".
Bloody hell, Trump's own lawyers admit that there was no fraud in some of the cases being tried for, erm, fraud.
If you can point me to a specific particular case, and a judge who has agreed that there is indeed evidence worthy of consideration, by all means, provide me with a link. I'd love to read it.