Bloomberg: For Chris Landon-Lane and his Tamar Valley neighbors on Australia’s Tasmania island, one issue matters most in tomorrow’s election: “The environment is the main topic of conversation as you walk down the street or sit at the dinner table.” That level of scrutiny is affecting the campaigns of both Prime Minister John Howard and the Labor Party’s Kevin Rudd, driving each toward the political center. Howard, 68, who is trailing in public-opinion polls after 11 years in office, …