You have to decide what those issues are for you. What do you think disqualifies a person from holding public office? I believe that the endorsement of the right to kill unborn children disqualifies a person from any position of public office. It's simply the same as saying that the endorsement of racism, fraud, or bribery, would disqualify him - except that child-killing is more serious than those.
John PiperThe task of all Christian scholarshipโnot just biblical studiesโis to study reality as a manifestation of Godโs glory, to speak and write about it with accuracy, and to savor the beauty of God in it, and to make it serve the good of man. It is an abdication of scholarship when Christians do academic work with little reference to God. If all the universe and everything in it exist by the design of an infinite, personal God, to make his manifold glory known and loved, then to treat any subject without reference to Godโs glory is not scholarship but insurrection.
John Piper