Won't that number change in each of the 80 districts? Advertising each would be tough.
In the City of Los Angeles, the typesetting and proof-reading would be a nightmare. The ad might have to list 20 different Districts. In every case, because I know from experience that the average voter doesn't have a clue what District they are in, the ad would end with this statement in very large type: "You may take this ad into the voting booth with you."
The answer to your question shows why I assert in the article that the only candidates who will matter are those who can get volunteers to hand to each voter as he/she is walking in to vote, an instruction card on the precise line that voter in that district needs to find to vote for that candidate.
Congressman Billybob