How can I compare the performance of multiple push notification campaigns in a single dashboard?

Yes — you can compare several campaigns or individual push notifications on one dashboard, but the comparison is built with Filters, not with a breakdown. Dashboard breakdowns only support Platforms, Attribute values and Tag values; there is no "by campaign" breakdown.

How to set it up

1. Go to Statistics > Dashboards and create a new dashboard.
2. Add a widget and, in the Metrics section, pick the metric you want to analyze (for example message sends or opens).
3. In the Filters section, click the plus icon and choose the filter that matches what you are comparing:
   • Campaigns — filters by journey; you can select several journeys, or specific messages inside them, in one go.
   • Push — filters by individual push message.
   • Aggregated Messages — filters by aggregated message.
4. Because several values in the same filter group are combined with OR, one widget with several campaigns selected gives you their combined figure. For a side-by-side comparison, duplicate the widget once per campaign, each with its own filter value, and place the widgets next to each other.

Filter logic: several filters from the same group are combined with OR; filters from different groups are combined with AND.

Optional breakdown: inside any one widget you can still use the Breakdown field at the bottom of the chart to split that campaign by Platform (or by event attribute / tag values, where applicable). A maximum of five breakdown series are shown at once.

Repeat with additional widgets for other metrics such as open rate and CTR.