Request URL showing ":id" instead of parameter ExpressJS

I am trying to make a Get request to search a database by object ID. When I write

router.get('/getPoll/:id', function(req, res) {

    Poll.findOne({id: req.params.id}, function(err, foundPoll) {
        if(err) throw err;
        if(!foundPoll) {
            res.json('Cant find poll');
        } else {
            res.json(foundPoll);
        }
    });


});

...instead of using the correct url which contains an object id, the request url literally contains ":id"

I want to use a url like: "/getPoll/123456789asdf34

But a url like: "/getPoll/:id" is used instead

The rest of the code can be found on github here

via Ethernetz