The 'prize' is the 2nd Congressional District's 9 delegates. There are seven delegates each from the 1st, 7th, 8th, 13th, and 14th Congressional Districts and six from the 6th. Each of the other twelve Congressional Districts get lesser number of delegates down to 3 delegates from the 9th Congressional District.
Interestingly, if either candidate gets 1 vote more than 85% in any Congressional District they get ALL those delegates.
Fifty-five delegates are awarded statewide which means about 1 delegate for each 2% of the statewide popular vote.
All this obsession on the statewide vote is only a ROUGH approximation ... and it matters WHERE the vote is.
Tuesday 22 April 2008: 158 of 187 delegates to the Democratic National Convention are allocated to presidential contenders based on the results of the voting in today's Pennsylvania Presidential Primary. A mandatory 15 percent threshold is required in order for a presidential contender to be allocated National Convention delegates at either the congressional district or statewide level.
* 103 district delegates are to be allocated proportionally to presidential contenders based on the primary results in each of the State's 19 congressional districts.
o CD 9: 3 delegates
o CDs 5, 10, 16, 17, 19: 4 delegates each
o CDs 3, 4, 11, 12, 15, 18: 5 delegates each
o CDs 6: 6 delegates each
o CDs 1, 7, 8, 13, 14: 7 delegates each
o CD 2: 9 delegates
* In addition, 55 delegates are to be allocated to presidential contenders based on the primary vote statewide.
o 35 at-large National Convention delegates
o 20 Pledged PLEOs
The remaining 29 National Convention delegates consist of
* 26 Unpledged PLEO delegates:
o 13 Democratic National Committee members.
o 12 Members of Congress (1 Senator and 11 Representatives).
o 1 Governor.
o 0 Distinguished Party Leaders (Note: Governor Edward Gene "Ed" Rendell, Chairman of the Democratic National Committee from 1999 to 2001, is a Distinguished Party leader. Reasoning that the office holder position is better known to the public in general, The Green Papers treats elected officials who are Governors, U.S. Senators, or U.S. House members and Distinguished Party Leaders or DNC members as office holders.).
* 3 Unpledged "add-on"s (selected by the Pennsylvania State Democratic Committee).
These 29 delegates and will go to the Democratic National Convention officially "Unpledged".
http://www.thegreenpapers.com/P08/PA-D.phtml