In the past few decades,the influence of political parties has been declining（）Aso the political parties are no longer importantBso an independent presidential candidate can win a national electionCbut without the backing of a political party,a presidential candidate still cannot winDso the presidential election has become more unpredictable
In the past few decades,the influence of political parties has been declining（）
Aso the political parties are no longer important
Bso an independent presidential candidate can win a national election
Cbut without the backing of a political party,a presidential candidate still cannot win
Dso the presidential election has become more unpredictable
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