Which type of ballot generally leads to the coattail effect, where down-ballot candidates benefit from the popularity of those listed above them?

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A party-column ballot groups all candidates from a particular party together, making it easier for voters to cast straight-ticket votes. This can lead to the coattail effect, where the popularity of a party's candidate at the top of the ticket translates to down-ballot candidates from the same party receiving more votes.

Which Type of Ballot Generally Leads to the Coattail Effect