Complex sentence: He had previously campaigned for the Progressive Conservative Party of Saskatchewan, and called for tax cuts and the cancelation of the Canadian gun registry during the 1997 election ("Saskatoon Star-Phoenix", 1 May 1997).
Split into simpler sentences: He had previously campaigned for the Progressive Conservative Party of Saskatchewan. In the 1997 election, he called for tax cuts and the cancelation of the Canadian gun registry ("Saskatoon Star-Phoenix", 1 May 1997).