Influencer marketing platforms support the process of finding suitable influencers for a campaign by offering various capabilities such as advanced search features, detailed audience analytics, and practical campaign workflows.

1. Advanced Search: Platforms allow users to sift through a vast database of influencers using criteria relevant to their brand and campaign. Filters can include niche, follower count, location, language, gender, and age among others. For example, on Flinque or others like AspireIQ, you can search for influencers related to fashion, with 50k-100k followers, located in the USA.

2. Audience Analytics: These systems provide insights into an influencer’s audience demographics, interests, and engagement rates. Tools such as HYPR, for instance, provide in-depth insights into influencer audiences, helping brands reach their target market effectively.

3. Campaign Management: Influencer marketing platforms often include tools for mapping out campaign timelines, content requirements, deliverables, and payment arrangements. On platforms like Flinque, you can easily manage multiple influencers and campaigns simultaneously, tracking all interactions and performance in one place.

4. Performance Tracking: These platforms provide analytics post-campaign to evaluate the effect of the influencers on your target metrics. Klear or similar platforms offer detailed reports, which can help in gauging successes, learning, and planning future campaigns.

These capabilities can significantly simplify the process of discovering influencers, running campaigns, and measuring their impact. It is important to remember though, that the ideal platform largely depends on your specific needs and objectives. Platforms vary in their approach, features, and strength areas.