Influencer past campaign performance can provide valuable insights to brands intending to shortlist influencers for future campaigns. Here’s how you can use this information:

1. Evaluate Consistency: Regular strong performance indicates reliability and consistency. Influencers with a proven track record have demonstrated success in maintaining engagement, which can be a key factor for brands.

2. Gauge Relevance: Past campaigns allow brands to assess the type of audience an influencer reaches. This can help in choosing influencers whose audience aligns with the brand’s target market.

3. Measure Engagement: Looking at the responses to previous campaigns (likes, shares, comments), you can gauge the influencer’s engagement level, a vital metric in influencer marketing.

4. Understand Content Style: Reviewing past campaigns can also help understand the content style of influencers, to see if it’s a fit for your brand’s image and message.

5. Calculate ROI: If possible, understanding the return on investment from a previous campaign can offer insight into the potential success of future campaigns.

While this strategy is broadly applicable, platforms like Flinque can further ease the process with features like advanced analytics, influencer comparison, audience demographics, and more, helping brands make informed decisions.

Remember, every influencer marketing platform is different, and the best one for your brand will depend largely on your specific needs. Ensure you take into consideration both past performance data and current campaign goals when shortlisting influencers. This will enable you to select the most suitable influencers thus maximizing campaign success.