A daily roundup of fresh data from scholars, governments, think tanks, pollsters and other social science researchers.

American voters divided on whether Obama or Putin is a stronger leader, Quinnipiac
Map: The oldest and youngest congressional delegations, Washington Post
Can Democrats match Tea Party enthusiasm for midterms? The Wall Street Journal
McAuliffe’s 2013 win not a model for Democratic victory in midterms, FiveThirtyEight

Working women boost family economic mobility, The Pew Charitable Trusts
But if women’s wages are rising, why are so many families getting poorer? The Atlantic
Janet Yellen’s labor market “dashboard”, Bloomberg News
In strong U.S. IPO market, 64 companies raised $10.6 billion in Q1, Renaissance Capital
More house, less booze: How spending changes from ages 25 to 75, NPR
Overdraft fees at banks hit a high, despite curbs, The Wall Street Journal
Net energy imports in 2013 lowest in more than 20 years, EIA
Interactive: Tracking the economies of 100 largest U.S. metro areas, Brookings
Interactive: Comparing car companies on number of recalls, Time

Health & Society
Why are northerners born earlier in the year than southerners? Business Insider
Sprawling cities face more car wrecks and higher obesity, The Wall Street Journal
For several years now, Americans have been driving less, Washington Post
Which presidential libraries get the most visitors? The Economist

Ukraine’s changing demography since independence in 1991, PRB
Most Afghans lack confidence in elections, Gallup
Map: Where is Bitcoin legal? CNN Money
Values stressed by parents affect attitudes about work, fertility, WSJ

Random Sample
Here’s how to really compare apples with oranges, The Economist

Got new data to share? Send it to us via email facttank@pewresearch.org or Tweet us @FactTank.

George Gao  is a former associate digital producer at Pew Research Center.