From left, Daren Derico, Dan Thayer and Belinda Derico hold signs outside the State House on Thursday in Augusta during a rally in support of a bill that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Maine Rep. Michelle Dunphy, D-Old Town, speaks outside the State House on Thursday in Augusta during a rally in support of a bill she sponsored that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Farmers Michael and Pat Macfarlane hold signs outside the State House on Thursday during a rally in support of a bill that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Cara Freeman holds a sign outside the State House on Thursday to show her support for a bill that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Rep. Craig Hickman, an organic farmer from Winthrop, speaks Thursday in Augusta about a bill that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Nancy Odin, an organic farmer, speaks Thursday before the legislative agriculture committee about two bills regarding Maine's GMO labeling law.

Ellis Additon of the Maine Department of Agriculture, Conservation and Forestry speaks Thursday before the Agriculture, Conservation and Forestry Committee in Augusta in opposition to a bill that would allow Maine's GMO labeling law to go into effect without relying on other states to take action.

Supporters of a bill to require labeling of genetically modified food gather Thursday outside the State House before a hearing on the bill.