No. of qualifying contributions = 2,000 + (500 x No. Districts)
The number of qualifying contributions is equal to 2,000 plus 500 times the number of congressional districts in their state.
For example:
A candidate running for U.S. Senate in Maine, which has two districts, would raise 3,000 qualifying contributions – the base of 2,000 donations plus an additional 500 for each of the two congressional districts.
A candidate running for U.S. Senate in Ohio, with 18 districts, would require 11,000 qualifying contributions before receiving Fair Elections funding.