Go here http://www.chicagonow.com/#login and login using your existing ChicagoNow user name and password. You can also use the email address connected to your user name.
If it worked you will see your blog name in the black area at the top of the browser as seen below.
To access the WordPress dashboard click on the blog name. If you are an admin on more than one blog it will say "My blogs" and all your blogs will appear underneath. Click on the appropriate one.