House Majority PAC, a Democratic-aligned group, is going on the air in California's 10th district against freshman Republican Rep. Jeff Denham. The group is launching a Medicare-themed television ad that targets "Denham's plan" for Medicare and states that his Democratic opponent, astronaut Jose Hernandez, would strengthen the program. The ad hits the Sacramento airwaves Saturday and will run for a week and a half behind a six-figure independent expenditure. (more…)