CuriousButInnocent wrote on Apr 14^th, 2015 at 12:13am:


Yes. But it's complicated. In some states, polygraph results may be admissible at trial if both the prosecution and the defendant stipulate to their admissibility. Sometimes, in particular when the case is weak and conviction doubtful absent a confession, a prosecutor will offer someone suspected of a crime a deal: pass a polygraph "test" and charges will be dropped, but you must first sign an agreement stipulating that the results--pass or fail--will be admissible at trial. This is a fool's bargain, but some people take it.

And in the state of New Mexico, someone charged with a crime can proffer polygraph "evidence" over the prosecution's objection. It's up to the judge to decide whether to admit it.