I assume you're talking about cable, right?
Either way... unfortunately the mid-Hudson Valley is in a "hole" when it comes to TV coverage. A news story has to be REALLY big for NYC or Albany to send a crew to places like Beacon, Poughkeepsie or New Paltz.
A quick Google search shows Poughkeepsie is 80 miles from Albany and 83 miles from New York City. Not the kind of driving most TV news crews will make on a regular basis, and the last time I checked... no station from either market had a bureau in the area. Technically, Poughkeepsie and the Mid-Hudson Valley could be its own TV market. That's why the local cable companies have had modest success with their own local news operations. But the NYC market would never give up the household numbers -- that would put a dent in their sales rates.
As far as cable coverage goes, it is weird that some systems, primarily in the northern halves of the counties, carry Albany... when technically both counties are entirely within the NYC DMA. I suspect this may be a throwback to the early days of cable, when the cable companies literally pulled the signals off the air (as opposed to satellite or fiberoptic feeds). After a certain point, you're literally closer to Albany than you are to NYC... so the reception from the Albany stations was likely much stronger than the signals coming from NYC.
Even though today's technology should easily make it possible for northern Dutchess/Ulster cable systems to carry crystal clear signals of the NYC stations, they probably just figure the viewers have had Albany for so long already... no sense in changing it around. If the NYC market ever does (or maybe already did?) enforce must-carry rules, I would expect northern Dutchess/Ulster cable systems to continue carrying Albany in addition to NYC.
Either way, the fact that the mid-Hudson is in a "gray area" too far away to get decent coverage from either Albany or NYC... is a main reason the various local cable news operations are successful. Last I knew, there was one in Wappingers Falls and another one out near Middletown, but it's been so long since I've lived in the area... I'm not too familiar with the boundaries over which cable companies serving the area today.