diff --git a/server/vb/migrations/0014_add_tool_to_contest.py b/server/vb/migrations/0014_add_tool_to_contest.py
new file mode 100644
index 0000000..35f44b1
--- /dev/null
+++ b/server/vb/migrations/0014_add_tool_to_contest.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.3 on 2024-05-21 17:43
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('vb', '0013_add_subdomains_flag'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='contest',
+            name='tool',
+            field=models.CharField(choices=[('vote_america', 'Vote America'), ('rock_the_vote', 'Rock the Vote')], default='vote_america', max_length=32),
+        ),
+    ]
diff --git a/server/vb/models.py b/server/vb/models.py
index 81577f5..9aeda57 100644
--- a/server/vb/models.py
+++ b/server/vb/models.py
@@ -205,6 +205,13 @@ class ContestWorkflow(models.TextChoices):
     NONE = "none", "None"
 
 
+class ContestTool(models.TextChoices):
+    """The registration tool for the contest."""
+
+    VOTE_AMERICA = "vote_america", "Vote America"
+    ROCK_THE_VOTE = "rock_the_vote", "Rock the Vote"
+
+
 class Contest(models.Model):
     """A single contest in the competition."""
 
@@ -219,6 +226,14 @@ class Contest(models.Model):
     start_at = models.DateTimeField(blank=False)
     end_at = models.DateTimeField(blank=False)
 
+    # We support running contests with different registration tools.
+    tool = models.CharField(
+        max_length=32,
+        choices=ContestTool.choices,
+        blank=False,
+        default=ContestTool.VOTE_AMERICA,
+    )
+
     # The assumptions here have changed basically weekly as we gather more
     # data and learn more. As of this writing, our current assumptions are:
     #