It became customary for members of a committee, in the previous congress, to be re-appointed at the start of the next. A seniority rule was normally used to decide committee chairmen, similar to that which the Senate had usually followed since 1846. The chairman was likely to be the majority member of a committee, with the longest continuous service on it. However, party leadership was typically not associated with seniority. Out of the group of fifty three standing committee chairmen, at the start of this Congress, Nelson Polsby identified thirty three as the most senior member of the majority on the committee. In the other twenty cases, thirteen senior majority members were compensated for not being chairman of the committee (seven chaired another committee and six received better committee assignments than in the previous Congress). Thus only in seven instances was the seniority custom violated, without obvious compensation for the Congressman passed over. This list refers to the standing committees of the House in the 63rd Congress, the year of establishment as a standing committee (adoption of the name used in 1913), the number of members assigned to the committee and the corresponding committee in the current congress. Because of consolidation of committees and changes of jurisdiction, it is not always possible to identify a clear successor panel. A numerical rank is assigned to each of the 435 members initially elected to the 63rd Congress. Other members, who joined the House during the Congress, are not assigned a number. Three Representatives-elect were not sworn in; of whom one died before the Congress started, one resigned to become a U.S. Senator and one was too ill to take his seat (before dying during the Congress). The list below includes the Representatives-elect (with names in italics), with the seniority they would have held if they had been able to be sworn in.  Major party designations used in this article are D for Democratic members and R for Republican representatives. Other designations include Ind for Independent and Prog for Progressive.