Capital punishment for murderers exists in most U.S. states. However, a few states ban this form of punishment. Politicians often need to know which members of the public support and which oppose. Can we conclude from the data that there is a difference between Democrats, Republicans, and Independents (PARTYID: 0, 1 = Democrat, 2, 3, 4 = Independent, 5, 6 = Republican) in terms of support for capital punishment (CAPPUN)?