diff --git a/TASKS.md b/TASKS.md
index 26868e8..380428a 100644
--- a/TASKS.md
+++ b/TASKS.md
@@ -143,7 +143,7 @@ Per-component lines live in `tasks/`. Tags there:
 - [x] T42a Misc · Time — `tasks/ch31-43.md`
 - [x] T42b Misc · Numbers — `tasks/ch31-43.md`
 - [x] T42c Misc · Codes and checks — `tasks/ch31-43.md`
-- [ ] T42d Misc · Asking and learning — `tasks/ch31-43.md`
+- [x] T42d Misc · Asking and learning — `tasks/ch31-43.md`
 - [ ] T42e Misc · Terms and notices — `tasks/ch31-43.md`
 - [ ] T42f Misc · Web — `tasks/ch31-43.md`
 - [ ] T42g Misc · Export and import — `tasks/ch31-43.md`
@@ -454,3 +454,5 @@ Per-component lines live in `tasks/`. Tags there:
 | T42b | 2 | PASS | |
 | T42c | 1 | FAIL | a verdict or a new ask disabled Verify while it held focus, so focus fell to the root; Enter handed a second answer over during the check; a passed field kept its ring and caret |
 | T42c | 2 | PASS | three claims untested; tests for focus after an answer and a resting pass added in the pass commit |
+| T42d | 1 | FAIL | a pointer's untick disabled Submit while it held focus, so focus fell to the root; six claims untested; radio labels ran past a 280px box |
+| T42d | 2 | PASS | the poll's mark and its selector now share one binding |
diff --git a/src/misc/poll.rs b/src/misc/poll.rs
index 03e7aca..3b9e7ba 100644
--- a/src/misc/poll.rs
+++ b/src/misc/poll.rs
@@ -127,8 +127,9 @@ impl RenderOnce for Poll {
                                 _ => *votes as f32 / total as f32,
                             };
                             let percent = format::percent(share as f64, 0, false);
+                            let marked = ix == voted;
                             div()
-                                .debug_selector(|| match ix == voted {
+                                .debug_selector(|| match marked {
                                     true => format!("poll-{label}-{percent}-voted"),
                                     false => format!("poll-{label}-{percent}"),
                                 })
@@ -147,7 +148,7 @@ impl RenderOnce for Poll {
                                                 .text_color(colors.fg)
                                                 .child(Ellipsis::new(label.clone())),
                                         )
-                                        .when(ix == voted, |row| {
+                                        .when(marked, |row| {
                                             row.child(
                                                 Icon::new(IconName::CircleCheck)
                                                     .size(IconSize::Sm)