At the Crossroads: An Examination & Analysis of Women's Political Images on the National Stage

Mary Beth Leidman, Jaclyn M. Emershaw, and Sarah Tourtellotte recently compiled data on photographs of currently serving women Senators and Governors. They were seeking to discover the physical attributes shared by these elected women (hair color, body type, etc.). 

Can you guess which obvious physical patterns emerged from the study? (I'm not telling! The answer is at the bottom of page 3).

Here is the abstract of the study: 

However the 2008 Presidential election has turned out, it was an epic moment for women in national politics. Senator Hillary Clinton's competitiveness in the Presidential Primaries was at the epicenter of gender political studies during the Presidential Primaries season. There are lingering questions concerning why she did not triumph given her experience, savvy and general background. This study concerns itself with the projection of image for women in politics. It endeavors to develop a methodology which could be replicated and examines the idea of whether or not successful image can be codified and act as a predictor of electability for women in national or executive level state politics.

The study can be downloaded here.

Despite the study findings, I can spot several physical similarities among the women of the 110th Senate. Can you?