Oregon GMO Right to Know, which is trying to qualify a measure for the November ballot that would require the labeling of genetically modified foods, reported a second contribution of $100,000 today.

The campaign earlier reported getting $100,000 from Dr. Bronner's Magic Soaps. Today's check comes from the Maryland-based Organic Consumers Fund. The campaign has raised $200,000 so far.

Both Dr. Bronner's and the Organic Consumers Fund contributed heavily to the "yes" side of a GMO labeling measure that lost by two percentage points in Washington last year. 

Based on the heavy spending on GMO labeling in Washington in 2013 and California in 2012 (where a labeling measure also failed by two percentage points), it's likely labeling will be the biggest dollar measure on the November ballot, if proponents can gather the required signatures. 

Earlier this week, Vermont's Legislature passed a GMO labeling bill and is poised to become the first state to require such disclosure.