diff --git a/polls/setup.php b/polls/setup.php
new file mode 100644
index 0000000..c02894e
--- /dev/null
+++ b/polls/setup.php
@@ -0,0 +1,166 @@
+<?php
+session_start();
+
+// Include the database setup/connection
+require_once 'db.php';
+
+// Initialize variables
+$error = '';
+$success = '';
+
+// Count how many users already exist in the database
+$checkTotal = $db->query("SELECT COUNT(*) FROM users")->fetchColumn();
+
+// If at least one user exists, show a message and no form
+if ($checkTotal > 0) {
+    ?>
+    <!DOCTYPE html>
+    <html>
+    <head>
+        <meta charset="UTF-8">
+        <title>Setup Admin User</title>
+        <style>
+            body {
+                font-family: Arial, sans-serif; 
+                margin: 20px;
+            }
+            .container {
+                max-width: 500px; 
+                margin: 0 auto;
+            }
+            .info {
+                color: #333;
+            }
+            a {
+                color: blue;
+                text-decoration: underline;
+            }
+        </style>
+    </head>
+    <body>
+    <div class="container">
+        <h2>Admin User Already Exists</h2>
+        <p class="info">
+            An admin user has already been created. No additional admins can be set up here.
+        </p>
+        <p>
+            Go back to the <a href="index.php">Polls site</a>.
+        </p>
+    </div>
+    </body>
+    </html>
+    <?php
+    exit;
+}
+
+// If we are here, no user exists yet, so show the form
+if (isset($_POST['setup'])) {
+    $username = trim($_POST['username'] ?? '');
+    $password = trim($_POST['password'] ?? '');
+    $confirmPassword = trim($_POST['confirm_password'] ?? '');
+
+    // Basic validation
+    if ($username === '' || $password === '' || $confirmPassword === '') {
+        $error = 'All fields are required.';
+    } elseif ($password !== $confirmPassword) {
+        $error = 'Passwords do not match.';
+    } else {
+        // Create the first (and only) admin user
+        $hashedPassword = password_hash($password, PASSWORD_DEFAULT);
+        $insertStmt = $db->prepare("
+            INSERT INTO users (username, password)
+            VALUES (:username, :password)
+        ");
+        $insertStmt->bindValue(':username', $username, PDO::PARAM_STR);
+        $insertStmt->bindValue(':password', $hashedPassword, PDO::PARAM_STR);
+        $insertStmt->execute();
+
+        $success = "Admin user '$username' created successfully.";
+    }
+}
+?>
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>Setup Admin User</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif; 
+            margin: 20px;
+        }
+        .container {
+            max-width: 500px; 
+            margin: 0 auto;
+        }
+        .error {
+            color: red;
+        }
+        .success {
+            color: green;
+        }
+        label {
+            display: inline-block; 
+            width: 120px;
+        }
+        input[type=text], 
+        input[type=password] {
+            width: 250px;
+            margin-bottom: 10px;
+        }
+        button {
+            margin-top: 5px;
+        }
+    </style>
+</head>
+<body>
+<div class="container">
+    <h2>Setup Admin User</h2>
+
+    <?php if ($error): ?>
+        <div class="error"><?php echo htmlspecialchars($error); ?></div>
+    <?php endif; ?>
+    <?php if ($success): ?>
+        <div class="success"><?php echo htmlspecialchars($success); ?></div>
+        <p>You can now <a href="admin.php">go to the Admin page</a> to log in.</p>
+    <?php else: ?>
+        <form action="setup.php" method="post">
+            <div>
+                <label for="username">Admin Username:</label>
+                <input 
+                    type="text" 
+                    name="username" 
+                    id="username" 
+                    value="<?php echo isset($_POST['username']) ? htmlspecialchars($_POST['username']) : ''; ?>" 
+                    required
+                />
+            </div>
+
+            <div>
+                <label for="password">Password:</label>
+                <input 
+                    type="password" 
+                    name="password" 
+                    id="password" 
+                    required
+                />
+            </div>
+
+            <div>
+                <label for="confirm_password">Confirm Password:</label>
+                <input 
+                    type="password" 
+                    name="confirm_password" 
+                    id="confirm_password" 
+                    required
+                />
+            </div>
+
+            <div>
+                <button type="submit" name="setup">Save Admin User</button>
+            </div>
+        </form>
+    <?php endif; ?>
+</div>
+</body>
+</html>
