https://www.defensenews.com/breaking-news/2017/06/13/us-senate-advances-saudi-guided-munitions-sale-53-47/

https://www.washingtonpost.com/archive/politics/1989/03/10/senate-kills-towers-nomination-as-defense-chief-53-47/5e0b1518-4ee7-499e-85b8-b2f9fcb4989a/?noredirect=on&utm_term=.8d89932fb8db

https://www.westernjournal.com/ct/blue-wave-fail-gop-newcomer-flips-139-year-democrat-seat/

https://www.pollbludger.net/2018/09/16/ipsos-53-47-labor-5/