This is not a "nomination" process in the usual sense of the word. Rather, this is more like a primary election: the eventual candidates will be those who receive the most nominations in their election units.
Nominations function to identify candidates for each voting unit. This selection process is not the final election for members to the Bloomington Faculty Council.
Before nominating a colleague, please ask if they are willing to run for election. If you have time, you may want to talk with others in your unit about who would be an especially good representative.