"Left Party leader Oskar Lafontaine ruled out forming an alliance with Schroeder's party, shutting out the chance of an all-left coalition."
http://www.breitbart.com/news/2005/09/18/D8CMQKRG8.html
You're assuming Lafontaine was telling the truth. My understanding of the man is that he would sell his grandmother to a glue factory for a whiff of power.
Regards, Ivan