For related articles and more information, please visit OCA’s Millions Against Monsanto page, Genetic Engineering page and our Washington News page.

Initiative 522 – the statewide ballot measure to require labeling of genetically engineered foods –  is clinging to a slight lead heading into the final two weeks before Election Day.

But momentum has clearly shifted against the measure, thanks to a barrage of opposition advertisements over the last month.

Or so says Seattle pollster Stuart Elway, whose latest poll on the Washington initiative has I-522 winning 46 to 42 percent, with still 12 percent of voters undecided.

“If you were calling it today, you’d say it’s still going to pass,” Elway said Monday. “But the momentum shift – how’s that going to play out?  And, it’s still within the margin of error.”

I-522’s four-point advantage falls within the poll’s margin of error of 5 percent, meaning the race is too close to call.

Campaign officials on either side of the measure touted Elway’s latest polling.

“It’s obvious that the more people know about 522 the less they like it,” No campaign spokeswoman Dana Bieber said in an email. “Voters are seeing through the proponent’s misleading initiative and misleading campaign.”

“Despite being outspent for weeks by five huge corporations, we’re still winning,” said Yes campaign spokeswoman Elizabeth Larter. “Clearly, Washingtonians are embracing the right to know what’s in their groceries.”

Based on interviews conducted from Oct. 15 to 17 of 413 registered Washington voters, The Elway Poll found a 41-point swing favoring I-522 opponents from its last survey in September.

In the previous poll, taken largely before advertisements began airing, Elway found Washington voters were easily approving the measure, 66 percent to 21 percent.

But that support has rapidly dwindled since an opponents’ TV ad blitz, which contends I-522 would be a misleading and inconsistent measure that would raise grocery costs.