Hillary Clinton is earning celebrity endorsements left and right. After scoring co-signs from Katy Perry, Beyonce, Christina Aguilera and Lena Dunham, Britney Spears found time in between rehearsals and performances for her Las Vegas residency Piece of Me to meet with the Democratic presidential candidate.

"Such an inspiration and beautiful voice for women around the world!!!" Britney says. "This woman had an intense presence and I felt very honored to meet her!!!"

 

Being in Vegas for #PieceOfMe is amazing for so many reasons... Especially today... because I had the incredible opportunity to meet @HillaryClinton!! Such an inspiration and beautiful voice for women around the world!!! This woman had an intense presence and I felt very honored to meet her!!!

A photo posted by Britney Spears (@britneyspears) on Feb 18, 2016 at 9:52pm PST

 

A photo posted by Britney Spears (@britneyspears) on Feb 18, 2016 at 10:51pm PST

Why does Britney meeting Hillary matter? It shows how Hillary increasingly understands how such endorsements influence an election. Barack Obama beat Hillary in the 2008 Democratic primary by around a million votes. Meanwhile, per Fortune, a 2013 study published by the Journal of Law, Economics and Organization showed that Oprah Winfrey's endorsement of Barack earned him—you guessed it—a million votes.