John McCain has cut Barack Obama’s lead in Iowa in half over the past month but still trails the Democrat 46% to 41%, according to the latest Rasmussen Reports telephone survey of voters in the state. When “leaners” are factored in, Obama leads his Republican opponent 49% to 44%. Last month Obama had a double-digit lead on McCain, 51% to 41%. In June, after Hillary Clinton dropped out of the Democratic presidential race, he led McCain by seven points. McCain had held steady at 38% for two months running, so the three-point uptick in the new survey is good news...