For such a rah-rah war supporter, King comes up a little short on actual needs of soldiers and vets.
See the ranking page here.
And this is how they came up with the rankings "Each IAVA Congressional Rating is based on a given legislator's voting history on issues that affect US Troops, Iraq and Afghanistan war veterans and military families.
To calculate the Ratings, IAVA reviewed all legislation voted on in the Congress since September 11, 2001. For each piece of legislation that affected troops, veterans or military families, IAVA took a position either in support of, or in opposition to its passage. The letter grades were derived, using the scales below, from the percentage of times that each legislator's vote matched the official IAVA stance."