The IGM Forum, which is run by the University of Chicago's Booth School of Business, polled top economists on the minimum wage. The first question they asked was whether raising the minimum wage could make it harder for some low-wage workers to find jobs. The responses were mixed, as the following chart shows.

The second question was whether they thought increasing the minimum wage was worth it given the possible downsides. They do.

Full results, with further commentary from the polled economists, here.