CNN — Three Republican presidential candidates will converge Friday at a gathering of evangelical Christians in Iowa for a “family discussion” that comes in the middle of an increasingly contentious primary. Florida Gov. Ron DeSantis, former South Carolina Gov. Nikki Haley and entrepreneur Vivek Ramaswamy plan to attend the Family Leader’s Thanksgiving forum in Des Moines, which will have them gathered around a table, adorned with a Thanksgiving basket, vegetables and decorations, for what the group calls a “moderated, friendly and open discussion about the issues that are most important to evangelical Americans today.” Candidates are duking it out to...