Mercer County conservative blogger Roberta Biros takes a look at the six GOP candidates in the 3rd District race and gives her best grades to Steve Fisher and Clayton Grabb.

As we noted last week, there is a Libertarian candidate in that race to unseat Kathy Dahlkemper. The party has a candidate in the 12th District race too -- Demo Agoris -- who will be one of three names on the May 18 special election ballot, with Tim Burns (R) and Mark Critz (D).

(Tribune-Democrat story on Agoris here.)