added a stat for how many people put only 1 preference above the line

src/ballot.rs

@@ -28,6 +28,10 @@ impl Ballot {
 			stats.both += 1;
 		}
 
+		else if votes_candidate.len() == 0 && votes_party.len() == 1 {
+			stats.party_single += 1;
+		}
+
 		if votes_candidate.len() >= CANDIDATE_MIN.min(header.candidates.len()) {
 			votes_candidate.sort_by(|a, b| i32::cmp(&a.0, &b.0));
 			votes = votes_candidate.into_iter().map(|(_,id)| id).collect_vec();

src/main.rs

@@ -31,6 +31,7 @@ fn main() {
 	eprintln!("Ballots:");
 	eprintln!("  Total: {}", counter.stats.total);
 	eprintln!("  Above: {}, {}", counter.stats.party, Percent(counter.stats.party.into(), counter.stats.total.into()));
+	eprintln!("    1 Preference: {}, {}", counter.stats.party_single, Percent(counter.stats.party_single.into(), counter.stats.total.into()));
 	eprintln!("  Below: {}, {}", counter.stats.candidate, Percent(counter.stats.candidate.into(), counter.stats.total.into()));
 	eprintln!("  Both: {}, {}", counter.stats.both, Percent(counter.stats.both.into(), counter.stats.total.into()));
 	eprintln!("Quota: {}, {}", counter.get_quota(), Percent(counter.get_quota(), total));

src/stats.rs

@@ -6,6 +6,7 @@ pub struct Stats {
 	pub total: u32,
 	pub candidate: u32,
 	pub party: u32,
+	pub party_single: u32,
 	pub both: u32,
 }
 
@@ -14,6 +15,7 @@ impl Stats {
 		Self {
 			total: 0,
 			party: 0,
+			party_single: 0,
 			candidate: 0,
 			both: 0,
 		}