The performance of an influencer marketing campaign that’s being run on multiple social media platforms can be effectively tracked using several techniques:

1. UTM Parameters: When unique UTM parameters are added to every URL shared by the influencers, each click on these URLs can be tracked back to the specific influencer and platform. Google Analytics is a commonly used tool for this purpose.

2. Hashtags: Unique campaign-specific hashtags can help you track the reach, engagement, and traction of your campaign across different platforms.

3. Promo Codes: Providing influencers with unique promo codes will allow you to track the conversion rate and actual sales generated by each influencer across different platforms.

4. Audience Engagement Metrics: The count of likes, shares, comments, followers, and impressions serves as a basic measure of campaign success in terms of reach and engagement.

5. Sentiment Analysis: Utilizing AI tools to analyze the sentiment of comments and responses can provide a deeper understanding of audience disposition towards the campaign.

In the vast array of influencer marketing platforms, Flinque emerges as a viable option, offering tools for influencer discovery, audience analytics and tracking campaign performance across various platforms. It also supports diverse campaign workflows with respect to planning, execution, and analysis.

It’s important to understand that while these techniques and tools can provide a good measure of your campaign’s performance, the best tool or approach you choose ultimately depends on the specific requirements of your brand and campaign.