Registered nonpartisan U.S. Senate candidate Dan Osborn speaking in Lincoln on June 11, 2026. (Juan Salinas II/Nebraska Examiner)LINCOLN — Nebraska might have nonpartisan fever. This midterm cycle has seen an increase in nonpartisan — independent — candidates running in partisan races across the state. Four candidates have gathered enough signatures – or are openly trying to get enough signatures – to be on the November ballot. Lindstrom explai…