Found another 53-47 connection today.
1989 confirmation hearings of Sen John G Tower (R) for Defense Secretary.
69 allegations of "alcohol abuse" against him. FBI investigated, and found them credible.
Senate vote: 53 against, 47 in favor. Tower nomination defeated.
F.B.I. Document on Tower Cited 'Pattern of Alcohol
Abuse'
https://www.nytimes.com/1989/03/17/us/fbi-
document-on-tower-cited-pattern-of-alcohol-abuse.html
FTA
The official of the Federal Bureau of Investigation who supervised the background check on John G. Tower said in an internal briefing paper that the investigation found a pattern of alcohol abuse that Mr. Tower had taken steps to correct by 1983.
The F.B.I. investigated 69 separate allegations against Mr. Tower.
'The F.B.I. investigation did not disclose any illegal activity on the part of Senator Tower, Mr. Kirk wrote. However, the investigation did confirm a prior pattern of alcohol abuse, as well as the Senator's continuing sporadic use of alcohol, with indications that he had greatly reduced his consumption levels during 1983-1989.'