Comparing ranked versus unranked methods

[DEMOREP1 at aol.com]

Adam wrote in part-

In list PR, the candidate lists for parties have to be formed well in 
advance of the election.  It would be very difficult for a party to foresee 
a specific voting breakdown, and split their party into two or more parties 
to take advantage of this. 

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D - Any historical facts available as to the maximum number of parties in 
nations having list PR ???

Especially splits in larger parties over the years -- especially in Israel (1 
national district -- 120 Knesset (Parliament) seats) ???