A Request for Proposals (RFP) from the Minnesota Department of Commerce is a formal invitation to potential contractors or grantees to submit a proposal. New vendors must complete a MnDOT vendor form (PDF) to be added to the MnDOT vendor table on Bid Express.Email completed MnDOT vendor forms to biddocsubmittal. A Request for Proposal (RFP) is a formal invitation to potential contractors or grantees to submit a proposal. Click on OnLine Bid button to go to Quest vBid (may need to refresh after download); You will need to login to QuestCND Vbid. 3. Here are some of the forms you may encounter: Bid bond. Gain extensive access to statewide RFPs, bids and awards. Registered vendors benefit from more state and local government bids in a central location. Vendor must complete the Affidavit of Non-collusion. (Appendix II) and include it with its RFP response. 4.