The Senate Democrats’ campaign arm is planning a two-day getaway at a five-star resort in the heart of California’s wine country in early October — at the same time the country may be in the midst of a government shutdown — according to an invitation obtained by Politico’s “Playbook.” The Democratic Senatorial Campaign Committee (DSCC) is hosting its Napa Retreat from Oct. 13-14 at Hotel Yountville in Napa County, Politico reported Saturday. Democratic New York Sen. Kirsten Gillibrand, who has chaired the DSCC since January, circulated an invitation to the event which lists her, Democratic Maryland Sen. Angela Alsobrooks and...