GARBERVILLE, Calif. (AP) – California voters are being asked to legalize the recreational use of medical marijuana 20 years after the state first allowed medicinal pot. Polls show the November ballot measure is ahead, and proponents have raised more than $23 million. That compares with $1.6 million contributed to the campaign fighting Proposition 64. The proposal has deeply divided marijuana farmers in the heart of Northern California’s pot-growing region. Many farmers are concerned that legalization would bring many unwanted changes to their industry, including costly regulation and taxes. They also fret that the law would usher in an era of lower prices and an influx of deep-pocketed corporations who could put smaller farms out of business. Others say it’s time to end criminalization and make sure California doesn’t fall behind.