I've recently been reading up on John B. Anderson's presidential campaign, and his status as something of a standard bearer for Rockefeller Republicans and centrists at the time. My question is, what would be the impact on the 1980 election if he didn't run at all? He formed an exploratory committee in 1978 and announced his run in April 1979, so the POD would be before then. There wouldn't be a Reagan-Anderson debate, but could another candidate possibly take his role as the liberal in the GOP primary?