Before the contract is awarded, the selected vendor must submit a subcontractor utilization plan in the county's Contract Compliance System. Explore the Hennepin County supplier portal to view solicitations and submit online bids for commodities and biddable services.Vendors interested in doing business with the State of Minnesota must register through the state's Supplier Portal. Here's where you can get started. Policies. Terms and Conditions (PDF) Sales Vendor Policy (PDF) Business Associate Agreement (PDF). Purchasing. The following resources are available to help vendors understand and navigate the procurement process. Register with the Minnesota Secretary of State This document is a contract between the food vendor and the MPRB for food vending during the Red, White and Boom event.