I don't know, but compare what you have to what is offered to NEW customers (in NoVa, there are weekly flyers for new customers - that's the best price Verizon will provide.
Then try talking to someone on the phone - - I'm in the pre-install stage of upgrading to triple-play from double-play, and as such, am not considered a "new" customer and they will give a $100 card instead of $300 for new customers -- the monthly 2-year pricing seems to be the same for me as a "upgrade" as given to "new").
Basically, Verizon knows their competitor pricing and if no provider in your area is hunting for new customers, they won't do anything to keep you, except a rep on the phone may give you "added services" (not lower your monthly payments) like "free" premium channel for 3 months, only you have to make sure you turn off the service (or get charged) -- I'm not familiar w/ Verizon, but big companies would rather give away things (either the cost is fixed or marginally lower) rather than reduce revenue.
Good luck and you should post back so others know what Veerizon's reponse is.