Not more than one change of judge or magistrate shall be granted on request and/or affidavit made by or on behalf of the same party or parties united in interest, but the filing of an affidavit and the first change of judge or magistrate shall not prevent any other party to the action or his attorney from availing himself thereafter under the provisions of §§ 15-12-20 to 15-12-37, inclusive.
SDCL 15-12-25