lackwell, Matthew. “Instrumental Variable Methods for Conditional
Effects and Causal Interaction in Voter Mobilization
Experiments.” Journal of the American Statistical Association
112, no. 518 (2017): 590–99.
https://doi.org/10.1080/01621459.2016.1246363.</p>

  </div>
  <div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
    <nav id="toc" data-toggle="toc" class="sticky-top">
      <h2 data-toc-skip>Contents</h2>
    </nav>
  </div>
</div>


      <footer>
      <div class="copyright">
 