Retirement watch: 3 groups of House Republicans whose exits would shake up the 2018 map

Two California House Republicans headed for the exits this week as a blue wave builds ahead of this year's midterm elections.

The retirements of Reps. Darrell Issa and Ed Royce -- as well as Arizona Rep. Martha McSally announcing Friday a run for US Senate -- brought the list of GOP House members who won't return next year to 33. The retirements have at times surprised Republican operatives -- coming with little advance notice. Royce, for example, had insisted in November he would run for re-election, and had raised $3.5 million. In a political environment in which a Quinnipiac poll found Democrats with a 17-point a...