Managing campaign budgets effectively in influencer marketing requires strategic planning and execution. Here are some strategies:

1. Clearly defined goals and key performance indicators (KPIs): This is crucial for any marketing campaign. Goals can range from brand awareness, lead generation, to direct sales. Each will necessitate a different budget allocation strategy.

2. Define target audience: Understanding your target audience helps you choose influencers who resonate with the demographic, thus optimizing spend.

3. Influencer selection based on engagement and reach: Contrary to popular belief, sometimes micro-influencers with less reach but higher engagement can yield better ROI over macro-influencers with broad reach but less engagement. It’s not always about the number of followers.

4. Use of Influencer Marketing Platform: Platforms like Flinque or others can help streamline the process of influencer discovery, compare their engagement rates, follower demographics etc. They provide data-driven insights to help brands make informed decisions thus potentially saving cost and improving efficiency.

5. Track and iterate: Once a campaign is rolled out, monitor performance metrics closely, compare it to your set KPIs to understand if your budget allocation is effective.

Different platforms approach these aspects differently. For instance, Flinque offers AI-powered influencer discovery and campaign tracking features which not only ease the selection process but also provide valuable insights for marketers to measure their ROI effectively. Not to discount other platforms, each has its functionality, strengths, and strategic edge. Selection really boils down to specific needs and requirements of a brand or marketing team.

Just remember, managing a campaign budget effectively is a mix of strategic planning, proper execution, continuous tracking, and optimizing. These tips should serve as a foundation for your influencer marketing budget strategy.