What is the religious ruling on a brother forsaking his family due to a difference of opinion regarding elections?

Leadership positions depend on strength and trustworthiness. The duty is to choose the most competent and pious individual who is believed to fulfill the task properly. So, whoever is known to be more God-fearing, more observant of His limits, and more upright in implementing His law is more deserving of leadership and election. It is necessary to discuss calmly in pursuit of the truth.