Incumbent Rep. Jim Baird's commanding lead in recent polling, with 62% support in an April Braun survey, underpins his 87.5% trader consensus for the Indiana 4th District Republican primary on May 7. Strong name recognition, military credentials, and incumbency advantage have solidified his position ahead of challengers. However, Baird's April 17 announcement that he will not seek re-election has opened the field, boosting businessman Craig Haggard (9%)—a self-funder polling at 14%—and attorney John Piper (4.5%, previously 6%). Traders appear cautious on the retirement's impact, with markets reflecting limited adjustment amid the short timeline to voting and no post-announcement polls.