MD one of the most liberal states ever you can tell that by it's insane taxe's
Suprisingly, I agree with Kevin's idea (if not his spelling or grammar). Man, mom & dad are socked, if you combine Federal, State, and County income taxes (yes, Montgomery County has an Income Tax!) they pay over 40%... property tax is also very high, thankfully we rent.
On the plus side, sales tax (5%) is reasonable, unlike DC's 10%.
As for reasons, it's just about what everyone's mentioned. Maryland's got an almost-Detroit-like (ie largely black, decaying old-industrial) medium-sized city (Baltimore), plus half of DC's suburbs, which are full of government bureaucrats - and many non-whites (blacks, asians, hispanics) too. Together, nearly half of Maryland's population lives in Montgomery County, Prince George's County, or the city of Baltimore, all of which are heavily majority-Democrat. Note that in 2004 the majority of Maryland counties (both in the western Panhandle and the Eastern Shore, plus a few others) voted Republican - but they're mostly rural (with two exceptions: Fredrick and Anne Arundel counties).