Complex sentence: Richards earned the Conservative Party of Canada nomination for the Wild Rose riding following the retirement of the incumbent Member of Parliament, Myron Thompson, who represented the constituency for the Reform, Canadian Alliance and Conservative parties over 15 years.
Split into simpler sentences: Richards earned the Conservative nomination for Wild Rose following the retirement of the incumbent Member of Parliament, Myron Thompson. Thompson had represented the constituency for the Reform, Canadian Alliance and Conservative parties over the previous 15 years.