This is 1952, so the Democrat Party still controls Congress both the House and Senate, as well as the White House with President Harry Truman. Republicans won a clean sweep in 1952 and won back the White House and both chambers of Congress. Which meant Senator Joe McCarthy would become Chairman of the Government Oversight Committee in the next Congress in 1953. And that is how the Army-McCarthy hearings go started in 1953 and went up to 1954 or so. When the American people and Senate Republicans along with Democrats got tired of Chairman McCarthy and his McCarthyism hearings. And they shut him down and censured him.
As far as Corliss LaMont with the American Labor Party. He was a Democratic Socialist, but further Left than Norman Thomas. Who ran for President several times for the Socialist Party. Norman Thomas was a Democratic Socialist in the European sense. Combining private enterprise with democratic socialism and the welfare state. Private sector with a large public sector that provides people with most of the basic necessities of life that we all need to live well. While the private sector provides things that people want and what makes us happy. And where people are allowed to keep their homes, cars, small business’s even. Corliss LaMont want government owning and operating the business sector, as well as the social welfare sector.