Certainly, there are several valuable metrics that can help measure the loyalty of an influencer’s audience. This is key for any brands or influencers looking to carry out a successful influencer marketing campaign.

1. Engagement Rate: This is a basic but crucial statistic. A higher engagement rate can indicate a loyal and active audience. Engagement can include likes, comments, shares, and saves.

2. Repeat Engagement: If the same followers consistently engage with an influencer’s content, it’s a good sign of audience loyalty. Identifying repeat engagement may take manual tracking or using a platform like Flinque that helps with audience analytics.

3. Audience Growth Rate: A steadily increasing follower count may signal that the influencer is consistently attracting and retaining new audience members.

4. Audience Quality Score: Beyond sheer numbers, audience quality is important. Several platforms provide this metric, including Flinque. It assesses factors like follower authenticity, influencer-followers’ interaction, and followers’ quality.

5. Follower Retention Rate: Tracking how many followers stay over time will give insight into loyalty. A high follower drop-off could indicate that the influencer struggles to retain their audience.

6. Sentiment Analysis: Checking the positive or negative responses in comments tends to reveal audience perception towards the influencer.

Each of these metrics provides a piece of the audience loyalty puzzle. Understanding how to utilize them efficiently can be achieved using an influencer marketing platform like Flinque, which offers features such as creator discovery, audience analytics, and campaign workflows. But, they should be adapted to align with your unique campaign goals. This approach ensures you get the insights you need to make informed, strategic decisions for your brands or businesses.