WASHINGTON — Senator Amy Klobuchar, Democrat of Minnesota, was sitting in her large, sunny office recently, riffling through the contents of her black leather purse.

After several moments, she laughed and produced a neon-pink earplug.

“Here’s an earplug from the helicopter,” she said, still searching through the bag she had bought from Ilze Heider Leather Design in Lanesboro, Minn. “That is not a normal thing that a woman might have in her purse. That is a military earplug from a Blackhawk.”

Ms. Klobuchar had just returned from a national security trip and was in the middle of what she jokingly said was a “post-recess-organize-the-purse-mode,” transferring the contents of a brown leather backpack that she had carried on her Middle East tour into her everyday carryall.

The Congress of yore might conjure images of spittoons and old male politicians with briefcases, but the 113th has ushered in a historic number of women — 20 in the Senate, and 81 in the House — and with them a historic number of handbags. In some ways, the female legislator’s purse or bag has become one of the most outwardly physical manifestations of the nation’s changing deliberative body.