FWIW, I was a prosecutor in a large county for six years, most of that in the felony trial division, and I’ve been a muni court magistrate for just over nine years.
Judges and magistrates are randomly assigned to cases here in Ohio. In my experience, savvy criminal defense lawyers will seek a jury trial if
(1) the assigned judge has a reputation for being pro-prosecution, OR
(2) if the evidence is such that a conviction is likely before virtually any judge.
They will ask for a bench trial if
(1) the judge is thought to be pro-defense, OR
(2) the judge is thought to be fair-minded, and the lawyer or her client want to avoid the time and expense of a jury trial, OR
(3) the judge is thought to be fair-minded, and the facts of the case are particularly shocking or heinous (juries being thought of as more likely to be vengeful in terrible than your average seen-it-all judge).
Of course, every judge is not perfectly understood by every lawyer, and there will always be cases where a very-well-understood judge will nevertheless surprise you.
Death penalty cases in Ohio must be heard either by a jury, or by a panel of three randomly-assigned judges of that court. This is because we don’t want any single individual to have the power of life or death over a defendant. Even the governor is advised by the state parole board in considering requests for commutations or pardons of capital felons.
What’s the relative difference in defense cost between a bench and jury trial? I had always assumed that a defense attorney would put on basically the same evidence in either case.
The evidence will be much the same, all things being equal, but defense counsel, depending on his courtroom tactics or individual style, is less likely to make appeals to emotion in bench trials, or to resort to showmanship or grandstanding. Jury trials can cost hundreds or even thousands of dollars more than bench trials, depending on length, both for court costs and attorney fees.
The jaded judge is the reason. The judges I stood before have seen so many criminals, mostly guilty, and they are all very pro-prosecution. I would never advise a criminal to waive the right to a jury. And in the civil context, with a jury you have the chance to get a really high award. My judges were also pro-defendant in civil cases.
This is news to me. I thought both sides had to agree to the bench trial, and for the reasons mentioned above, the prosecutor may have good reasons for preferring a jury trial.
Good thing I’m not a lawyer, or I would have a platoon of former clients pursuing me with papers for malpractice actions.