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Back選戰大熱門「洋流」帶人潮 傳播學者:翻轉台北要看2門檻
選戰大熱門「洋流」帶人潮  傳播學者:翻轉台北要看2門檻
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自由时报1 hour agoPolitics3 min readChinaView translation

選戰大熱門「洋流」帶人潮 傳播學者:翻轉台北要看2門檻

台北市長選戰熱詞「洋流」掀討論,學者分析其威力可能被高估,勝負仍取決於投票率門檻與中間選民轉向。

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台北市長選戰熱詞「洋流」引發關注。銘傳大學傳播學者杜聖聰分析指出,洋流雖讓選舉出現懸念,但其威力可能被高估,能否翻轉台北關鍵在於投票率是否能大幅上升及能否說服支持蔣的選民轉向。

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Why It Matters

台北市長選戰中出現名為「洋流」的政治現象,引發外界對於基層動員與投票率的討論。

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洋流能推翻台北嗎?銘傳大學傳播學者杜聖聰說,要先看投票率這道門檻。

台北市長選戰,這2個月最熱門的字眼是「洋流」,銘傳大學傳播學者杜聖聰今天發文提到,沈伯洋走到哪裡,夜市、市場、公園就擠到哪裡;但選舉終究不是比誰的人潮多,而是比誰的票多。洋流到底值多少票?他也透過分析指出,1128當天投票所的投票率門檻是重要的關鍵指標,洋流是真的,但威力可能被高估;它能翻轉幾個選區,卻很難單獨翻轉整座台北。

杜聖聰分析,洋流若有意義,就是把原本不太投票、而且比較支持沈伯洋的人帶進投票所。洋流的效果等於「洋流強度」乘以「投票率上升幅度」。人潮再多,如果投票日的投票率沒有真的上升,洋流就只是熱鬧;那洋流要多強才夠?網路上明確表態的貼文中,支持沈的比例高達65.6%,支持蔣的只有44.3%。假設新進場的選民偏好就像這群最熱情的網友,蔣沈打平所需的投票率約80%。但台北市長選舉近20年來從未超過71%,上一次突破80%是1998年的陳水扁對馬英九。

換句話說,在投票率65%到70%的區間,光靠動員翻不了盤。真正能改變結果的是「說服」:讓原本支持蔣的選民轉向。這場選舉的勝負仍取決於中間選民的判斷,而不只是街頭的熱度。台北市長選舉在1990年代曾有8成的高投票率,那是藍綠對決最激烈、政黨動員最強的年代;今年選情升溫,投票率回到7成並非不可能,但要再往上衝,就需要一個足以讓多數台北人覺得「非投不可」的理由。洋流做到讓支持者熱起來,但還沒有證據顯示它讓不關心政治的人也動起來。

他分析,洋流是2026年台北選戰最鮮明的政治現象,它讓一場原本被視為一面倒的選舉重新出現懸念。但數字也提醒,洋流要成為改變結果的力量,須同時跨過兩道門檻:一是投票率真的上升,二是說服原本不支持沈伯洋的人。前者決定北投士林與中山大同的歸屬,後者才決定誰入主市府。

Open Questions

  • 1128投票當天的實際投票率能否突破70%?
  • 中間選民最終的投票傾向為何?

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