Is the participant eliminated on first misspelling?
No, each participant is allowed to participate in all oral rounds in the Regional contests and a misspelling in any round will only give zero points and does not lead to elimination immediately. In fact, this is one of the main reasons why NSF spelling bee differs from a spelling contest at your child’s school in which a contestant is eliminated after the first misspelling. Also, during the NSF spelling bee contests, there will be a written phase where in all the contestants write the spelling of the same set of words.