本文在整理文獻研究之後，將1.候選人角色；2.大選時間因素；3.廣告類型與廣告表現三者做為切入研究問題的起始點，並據之發展相關研究假設與應用之統計方法。另外，研究方法則採用內容分析法，以了解負面競選廣告的使用情形和趨勢，文中並依相關統計方法與規則進行前測檢定與分析，務求符合客觀一致之精神。

本文研究結果發現與建議如下：

1．候選人角色(現任者/挑戰者)並非完全有效衡量或測定負面競選廣告的參考指標，「三里不同風、五里不同俗」，美國的政治生態、選舉制度和廣告文化與台灣本地情形都有一定程度的差異，而且台灣總統選舉並不存在候選人角色的基本假定，本文建議後續研究者可以將「民調」結果納入考量，民調可能才是候選人與其幕僚決定負面競選廣告基調的來源，但此點須由後續研究加以證實。

2．大選時期是了解負面競選廣告表現的重要的指標，研究發現愈接近大選中後期，廣告量就會愈接近高峰，另外情感式廣告也更傾向於在大選中後期中現身，顯現在大選情勢緊繃之下，負面競選廣告的任務主要是鼓動選民的涉入感與情緒熱潮，而非學者希冀的冷靜比較或攸關公共政策辯論的廣告。

3．某些負面競選廣告的概念在未經嚴格驗證的情形之下，已經有了誤用之虞，本文研究發現某些「理所當然」的廣告表現反而出現逆轉式結局，本文建議未來應將負面競選廣告的概念細緻化，例如「廣告類型」「廣告內容主題」「訴求類型」應將三者予以區分，當可對負面競選廣告得到更為全面的了解。

負面競選廣告的研究潛力十足，但環顧文獻後可以學者們努力於各自的研究結果，卻鮮少激盪出研究共識，雖然Johnson-Cartee和Copeland兩人大力倡導負面競選廣告的初步分類，但不時還是發現某些學者以各自定義、各據山頭的方式研究負面競選廣告，本文建議將來研究可試圖建立統合性、整合式、系統式的負面競選廣告概念。

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