For all Christian politicians:
"Live such good lives among the pagans, that though they accuse you of doing wrong, they may see your good deeds and glorify God on the day he visits us." 1 Peter 2:12
In other words, you need to hold yourself to a high standard so that your life is pure and attracts unbelievers into God's kingdom. I'm not naming names, but many of those in this year's election have not made it a point to be found blameless. We all mess up, but if a Christian holds a public office, he must be blameless, or at least humbly repent when he falls. Shame to those in the fold who do otherwise.