Is a Christian obligated to vote?

With the upcoming elections, there are many people who are arguing about who we should vote for and why for the office of president of the USA. Some people claim that Christians are not to be involved in politics and voting is optional, not an obligation. I would like to take a look at the Word of God and see if a Christian is obligated to vote or not and if the Bible teaches us for whom to cast our votes.

I would like to observe two passages from the New Testament, written by the Apostle Paul. The two passages are Romans 13:1-7 and I Timothy 2:1-4.