The campaign in Washington State is heating up, with Democrats releasing a video showing Dr. Matt Manweller, a political science professor and Republican Party chair, berating protesters standing against Rossi’s position on the minimum wage issue.

Dino Rossi had said he would consider cutting the minimum wage for entry-level teenage workers by $1.50. Dem candidate Governor Gregoire is in favor of the automatic increase scheduled for next year.

Matt Manweller spoke to protesters for a few minutes about the merits of the state’s minimum wage policy:

“Only somebody as dumb as Gregoire would endorse it. This policy hurts single moms. There would be 100,000 more single moms with a job.”

When told there were over 300,000 people who supported increasing the minimum wage, Dr. Manweller responded:

“You and 300,000 people are dumber than a post. Your stupidity is harming my county.”

Watch it yourself:

Funny thing is, he is at least partially right.

An EPI study of 2006 (PDF here) concludes that,

“from January 1979 to December 2004, the effect of minimum wage increases on retail and small business employment is estimated. Specifically, a 10 percent increase in the minimum wage is associated with a 0.9 to 1.1 percent decline in retail employment and a 0.8 to 1.2 percent reduction in small business employment.

These employment effects grow even larger for the low-skilled employees most affected by minimum wage increases. A 10 percent increase in the minimum wage is associated with a 2.7 to 4.3 percent decline in teen employment in the retail sector, a 5 percent decline in average retail hours worked by all teenagers, and a 2.8 percent decline in retail hours worked by teenagers who remain employed in retail jobs.

These results increase in magnitude when focusing on the effect on small businesses. A 10 percent increase in the minimum wage is associated with a 4.6 to 9.0 percent decline in teenage employment in small businesses and a 4.8 to 8.8 percent reduction in hours worked by teens in the retail sector.”