The question is deliberately asked about how many should exist, thereby giving you the option of giving answers that effectively means taking nuclear plants off-line. Including total scrapping of nuclear power. If you are fine with todays level but do not want more reactors then 400-500 would be your range.
I am mostly curious of what the various pro-/anti- stances means in terms of amount of nuclear power, right now measured in reactors. A vote for PES is a vote for EPP! A vote for EPP is a vote for PES! Support the coalition, vote EPP-PES in 2009!