Dynamic strategies are an essential part of politics. In the context of campaigns, for example, candidates continuously recalibrate their campaign strategy in response to polls and opponent actions. T
Compositional data are challenging to analyse due to the non-negativity and sum-to-one constraints on the sample space. With real data it is often the case that many of the compositional components ar
We develop a class of regression-based estimators, called Principal Components Difference-in-Differences (PCDID) estimators, for treatment effect estimation. Analogous to a control function approach,
