For niche-specific influencer marketing campaigns, some key metrics and performance indicators you should consider include:

1. Engagement Rate: This metric provides insights into your audience’s interaction with content by considering likes, comments, and shares. Analyzing engagement rate helps you understand how well your campaign is resonating with your niche audience.

2. Audience Demographics: Platforms like Flinque provides detailed audience analytics. It’s important to study the demographics of your influencers’ audience to ensure they align with your target market.

3. Brand Mentions and Sentiment: It’s essential to track how often your brand is getting mentioned within your niche community and the sentiment associated with it whether positive, negative, or neutral.

4. Traffic and Conversion Metrics: These include metrics such as click-through rates, website visits, and conversion rates – form the backbone of understanding whether the influencer campaign is driving actual results.

5. Content Relevance and Quality: The content that influencers produce should be relevant and engaging to your niche audience. You could measure this through feedback or engagement rates.

6. Influencer’s following: While not always the most important, the size of an influencer’s following in your niche market can affect visibility and reach.

Platforms like Flinque enable tracking of these metrics in real-time, allowing marketers to pivot and adjust campaigns effectively for optimal outcomes. Remember that the best platform for influencer marketing is highly subjective and depends on your business needs and objectives. Balancing metrics with qualitative factors like relevance and authenticity can help ensure a more effective niche influencer marketing campaign.