Is it likely an extremist party to emerge on either end of the political spectrum?

No.

Explanation:

No, an extremist party will not emerge on either end of the political spectrum because extremist party only emerge when all the members of this party are extremists so their ideology also turn extremists while on the other hand, if the number of non-extremists are more in the party than extremists then the party will not turn into extremist party so it depends on the ideology of members that is present on that party.

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