If an advertiser has the same keyword in two different ad groups the one to win a given auction will be the keyword with the:

If an advertiser has the same keyword in two different ad groups, the one to win a given auction will be the keyword with the:

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If an advertiser has the same keyword in two different ad groups, the one to win a given auction will be the keyword with the: Most historical data in the account. Highest Ad Rank. Highest maximum cost-per-click (CPC) bid. Best Quality Score.