By Paula Burkes Business Writer pburkes@oklahoman.comChris Wilson vividly remembers his excitement when his parents took him, at age 8, to a big rally at the Lawton airport for Gerald Ford during the 1976 general election. It's what recently spurred him to push hard for presidential candidate Ted Cruz, on the day before the presidential primary here, to add Lawton to his Oklahoma visit, which was the edge, Wilson believes, for Cruz to win the state. Wilson's firm, Oklahoma City-based WPA Opinion Research, is handling polling, analysis and digital strategy for the Cruz campaign.Read more on NewsOK.com