In New Jersey’s 11th Congressional District, Republican incumbent U.S. Rep. Rodney Frelinghuysen has an approval rating of 28%, and 54% disapprove of his job performance. according to a Public Policy Polling Memo. President Donald J. Trump has an approval rating of 40% and a disapproval rating of 56% in Frelinghuysen’s district. Speaker Paul Ryan is also unpopular with 26% of voters saying they approve of the job he is doing and a majority (63%) responding that they disapprove. These percentages, along with a hypothetical matchup between Frelinghuysen (40%) and a “Democratic opponent” (49%), indicate that Frelinghuysen is quite vulnerable in...