Reply #3: There is nothing wrong with the formula.

[TruthIsAll]

If you can find an error, kudos to you.
If you cannot, I guess it just means it's impossible.

					CT			UT
V= Bush 2-party	            44.76%		   72.94%
N= respondents			      872			798
R= response rate			51%			54%
T= responders+refusers              1710			1478

BP= Bush 2-party poll	            41.53%		    70.07%
NB = Bush Resp	                     362			559
NK = Kerry Resp	               510			239
										
RB = (V*N/(1-R)-NB)/(N/R - N)	 

Solving for RB (required % of Refusers):

Required Refusers necessary for Bush vote:
RR=V*N/(1-R)-NB                       434			706

Total Refusers, based on response rate:
NR= N/R - N	                        838		     680

Percentage of Required Refusers:
RB = RR/NR =                       51.86%		   103.88%