Some recent Chicago Tribune poll results appear to indicate that support for raising the minimum wage in the state's largest city may be enough to increase voter turnout for a non-binding November ballot referendum.

The poll found that 84 percent of registered Chicago voters support a city-task-force recommendation to increase the minimum wage to $13 per hour over the next three years. According to the poll, 78 percent of whites and 92 percent of African Americans and even 71 percent of Chicagoans making more than $100,000 a year back the plan.

Democrats have been hoping to use the referendum - which asks about raising the minimum wage to $10 an hour - as a tool to help spur turnout in what is rapidly developing into a big Republican year. And with the Tribune's numbers backing a much higher minimum wage, it does seem likely that the issue can be effective, particularly among African Americans. Support above 70 to 80 percent is generally seen as having a ballot impact. Get above 90 and it's sure to drive votes. Then again, the comparatively "stingy" state-ballot proposal, when compared to the Chicago proposal, might garner less enthusiasm.