Maryland's 1st Congressional District race could be decided by the roughly 60,000 voters in Cecil County.
While Republican Andy Harris can claim the Western Shore as his stronghold and Democrat Frank Kratovil the Eastern Shore, Cecil County remains a toss-up with just about 2,000 more registered Democrats than Republicans.
That's not to say both candidates don't have their vulnerabilities. Observers point to Queen Anne's County and Anne Arundel County as competitive, but none as unpredictable as Cecil.