Connally ran for Senate in 1928 and faced incumbent Democrat [[Klansman]] Earle B. Mayfield. He finished second in the primary with Mayfield garnering a plurality,<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=278791 TX US Senate - D Primary]. ''Our Campaigns''. Retrieved May 1, 2021.</ref> and won the runoff by just over ten percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=278804 TX US Senate - D Runoff]. ''Our Campaigns''. Retrieved May 1, 2021.</ref> | Connally ran for Senate in 1928 and faced incumbent Democrat [[Klansman]] Earle B. Mayfield. He finished second in the primary with Mayfield garnering a plurality,<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=278791 TX US Senate - D Primary]. ''Our Campaigns''. Retrieved May 1, 2021.</ref> and won the runoff by just over ten percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=278804 TX US Senate - D Runoff]. ''Our Campaigns''. Retrieved May 1, 2021.</ref> |