Iowa’s senior senator, Republican Charles E. Grassley, who celebrates his 82nd birthday Thursday, is a long-distance runner, both in his political career (first elected to public office in 1958 as a member of the Iowa Legislature) and in his exercise regimen. Here’s how Grassley told us he plans to celebrate: “I normally get up at 4 o’clock and run 3 miles, four times a week. But on my birthday, I run from my home to the Dome, my home in Arlington to the Capitol building” — about 6.1 miles, he said. (more…)