diff --git a/src/app/api/volunteer/details/route.ts b/src/app/api/volunteer/details/route.ts
index 284badf..0041664 100644
--- a/src/app/api/volunteer/details/route.ts
+++ b/src/app/api/volunteer/details/route.ts
@@ -7,7 +7,7 @@ import {
   SHEET_COLUMNS,
   SHEET_TAB,
 } from "@/app/toronto/volunteer/build-the-vote";
-import { sheetTimestamp, upsertSheetRow } from "@/lib/google-sheet";
+import { upsertSheetRow } from "@/lib/google-sheet";
 
 // Build the Vote step 2: optional details, added to the volunteer's row in the
 // Sheet shared with CJPAC. The row is found by the email step 1's response put
@@ -36,9 +36,8 @@ export async function POST(req: NextRequest) {
       email,
       values: {
         Availability: availability.join(", "),
-        "Mayoral candidate": mayoral,
+        "Mayoral Candidate": mayoral,
         Issues: issues,
-        "Details added at": sheetTimestamp(),
       },
     });
 
diff --git a/src/app/api/volunteer/route.ts b/src/app/api/volunteer/route.ts
index 6408060..760243f 100644
--- a/src/app/api/volunteer/route.ts
+++ b/src/app/api/volunteer/route.ts
@@ -3,7 +3,6 @@ import { NextRequest, NextResponse } from "next/server";
 import {
   DETAILS_API_PATH,
   EMAIL_COOKIE,
-  PARTNER_SOURCE,
   SHEET_COLUMNS,
   SHEET_TAB,
 } from "@/app/toronto/volunteer/build-the-vote";
@@ -57,16 +56,13 @@ export async function POST(req: NextRequest) {
       columns: SHEET_COLUMNS,
       email,
       values: {
-        "Signed up at": sheetTimestamp(),
-        "First name": firstName,
-        "Last name": lastName,
+        "Submitted At": sheetTimestamp(),
+        "First Name": firstName,
+        "Last Name": lastName,
         Phone: phone,
-        City: city,
-        "Postal code": postalCode,
-        Source: str(body.utm_source, 100),
-        Medium: str(body.utm_medium, 100),
-        Campaign: str(body.utm_campaign, 100),
-        Partner: PARTNER_SOURCE,
+        "Postal Code": postalCode,
+        // Submitting the form is consent; the form says so above the button.
+        "Consent to share with CJPAC": "Yes",
       },
     });
 
diff --git a/src/app/toronto/volunteer/build-the-vote.ts b/src/app/toronto/volunteer/build-the-vote.ts
index be5bfed..440b7ac 100644
--- a/src/app/toronto/volunteer/build-the-vote.ts
+++ b/src/app/toronto/volunteer/build-the-vote.ts
@@ -9,31 +9,21 @@ export const VOLUNTEER_PATH = "/toronto/volunteer";
 export const STEP_2_PATH = `${VOLUNTEER_PATH}/step-2`;
 export const THANKS_PATH = `${VOLUNTEER_PATH}/thanks`;
 
-/** Written to every row's Partner column so CJPAC can tell our sign-ups from
- *  those of their other partners. Not the visitor's own utm_source, which goes
- *  in the Source column. */
-export const PARTNER_SOURCE = "buildcanada";
-
 /** The tab of CJPAC's Sheet that sign-ups are written to, and the header row
  *  it starts with if empty. Values are matched to columns by these names, so
  *  renaming one in the Sheet means renaming it here too. */
 export const SHEET_TAB = "Sign-ups";
 export const SHEET_COLUMNS = [
-  "Signed up at",
-  "First name",
-  "Last name",
+  "Submitted At",
+  "First Name",
+  "Last Name",
   "Email",
   "Phone",
-  "City",
-  "Postal code",
+  "Postal Code",
   "Availability",
-  "Mayoral candidate",
+  "Mayoral Candidate",
   "Issues",
-  "Details added at",
-  "Source",
-  "Medium",
-  "Campaign",
-  "Partner",
+  "Consent to share with CJPAC",
 ] as const;
 
 /** Set by step 1's API response so step 2 can add to the right row without