In 1949, Nixon began to consider running for the United States Senate against the Democratic incumbent, Sheridan Downey. and entered the race in November. Downey, faced with a bitter primary battle with Representative Helen Gahagan Douglas, announced his retirement in March 1950. Nixon and Douglas won the primary elections and engaged in a contentious campaign in which the ongoing Korean War was a major issue. Nixon tried to focus attention on Douglas's liberal voting record. As part of that effort, a "Pink Sheet" was distributed by the Nixon campaign suggesting that, as Douglas's voting record was similar to that of New York Congressman Vito Marcantonio (believed by some to be a communist), their political views must be nearly identical.Nixon won the election by almost twenty percentage points.
On 25 November on the Korean western front, the PVA 13th Army Group attacked and overran the ROK II Corps at the Battle of the Ch'ongch'on River, and then inflicted heavy losses on the US 2nd Infantry Division on the UN forces' right flank.
The general concept of and procedure to be used in 3D-printing was first described by Raymond F. Jones in his story, "Tools of the Trade," published in the November 1950 issue of Astounding Science Fiction magazine. He referred to it as a "molecular spray" in that story.