Candidate.php

<?php 
  namespace App\Models;
  
  use Illuminate\Database\Eloquent\Model;
  
  class Candidate extends Model {
    
    /**
    * Gets the political party a candidate belongs to
    */
    public function politicalParty() {
      return $this->belongsTo(App\Models\PoliticalParty::class, 'foreign_key', 'local_key');
    }
  }