Node.js / Express: POST being turned into GET (code 302)

In brief, I have a login page where my POST request is turning into a GET in Express 4.

Here is the business part of my login page:

<form id='loginForm' action='/login' method='post'>
    <table>
        <tr>
            <td><input type='text' name='username' /></td>
        </tr>
        <tr>
            <td><input type='text' name='password' /></td>
        </tr>
        <tr>
            <td><button type='submit'>Submit</button></td>
        </tr>
    </table>
</form>

Here are routes I set:

// Express 4    
var router = express.Router();

router.get('/login', function(req, res) {
    res.render('./login.hbs', { message: req.flash('loginMessage') });
});

router.post('/login', passport.authenticate('local-login', {
    successRedirect: '/welcome',
    failureRedirect: '/login',
    failureFlash : true
}));

passport.use('local-login',
    new LocalStrategy(
        {
            usernameField: 'email',
            passwordField: 'password',
            passReqToCallback : true
        },
        function(req, email, password, next) {
            User.findOne({ 'authLocal.email' :  email }, function(err, user) {
            console.log('Inside local-login strategy with findOne A');
            [snip]

I put a breakpoint on the res.render for GET /login and in the findOne() call in the local-login strategy. When I click on the "Submit" button the breakpoint that catches things is in the router.get() code.

In the debugger the req.method is GET.

In the browser (Chrome) I'm told that I'm doing a POST to /login that returned 302. There is also a pending GET to /login with a 200 code. These two codes (302, 200) are when the debugger stops in router.get(). Even clearing the browser cache doesn't help.

Can someone tell me why my post request isn't being honored?

Thanks, Jerome.