it looks like the answer is no. israel has more diplomatic relations than i would have guessed, with 162 countries recognizing the state and only 37 that do not.
it's unlikely that the u.s., canada, australia and new zealand or the 27 members of the EU would recognize an independent palestinian state without a peace agreement with israel. that's 31. there are at least 6 other client states of the u.s., the u.k. and france that would not recognize a palestinian state without their big brother's say so. (palau is probably the most extreme example. the island nation always votes with the u.s. on israeli palestinian issues in the UN, even when no one else will).
on the other hand, a declared palestinian state probably would get more recognition that a bunch of other places that have declared independence in the last few years. they're sure to beat out transnistria (which no UN members recognize), south ossetia (recognition by 3 UN members), abkhazia (recognition by 3 UN members) and northern cyprus (recognition by 1 UN member).
just by getting all the countries that refuse to recognize israel, a newly declared palestinian state would do better than taiwan (which only has the recognition of 23 UN members). it might even do as well as kosovo (recognition by 63 UN members).
on the other hand, if abbas unilaterally declares a palestinian state, it will never get a UN seat. kaufman and lieberman are right, the u.s. is sure to veto its admission absent agreement with the israelis. which would also put them in the same boat as kosovo (whose UN recognition is blocked by russia)
whether a declaration of independence would do any good is a completely separate question. it definitely would stir the pot. and the israeli government seems afraid enough of the prospect to issue threats of retaliatory annexation. but is that really much of a deterrent? the west bank is already being effectively annexed bit-by-bit via israeli settlement policies. the current israeli government is determined to grab a chunk of the west bank, whether or not abbas declares an independent state.
