Even when I was a radical left-winger and ignorant of economices (redundant, I know), I saw the effects of raising the minimum wage. I worked at BK in high school and a value meal was three bucks. Ah, the memories. Then, the minimum wage went up and I thought "Woohoo, free raise!" Within three months or so, the price of fast food started going up by about the same amount accross the board. The minimum wage went up again a few years later and the same thing happened.
There are other factors, of course, but I can't believe people don't see the connection between raising the minimum wage and inflation. It also takes simple logic to see why companies leave the state or leave the country when the mimimum goes up. You can employ seven people here in NE for every five you can employ in WA, not including taxes. Living here is cheap, too.
What this kills is small business. Say your business employs three people and you absolutely need those three people to keep up your production. Some weeks they get a few hours of overtime. The minimum wage goes up ten cents. To give them a ten cent raise costs you an extra $120/ week plus any overtime. To a small business owner, that is like losing $120 to your paycheck each week. Now add in the increased social security and other payments and, suddenly, you can't afford to employ three people. You either eat the extra wages and slowly go broke until you make the extra money, never breaking even because more business means more overtime, or you lay someone off and you have to turn away customers, seriously damaging the health of your business. Then, inflation sets in and it makes it more expensive to run your business in other ways. It is a downward spiral. Put all of these small businesses and larger business losses together and you get a stagnant economy.
Bottom line, if you want economic and job growth, do not raise the minimum wage... get rid of it if you can.