The Girls star was a vocal supporter of eventual winner Barack Obama, even filming an advertisement for his campaign, but rumours suggested she had neglected her civic duty by failing to cast her ballot when America went to the polls in November (12).
However, the actress has now revealed she was so determined to vote, she flew across the country to get home to New York in time.
In a series of posts on Twitter.com, she writes, ""I did vote... I tried to get an absentee ballot but, because our nation's voting system is a steampunk cornmaze (disorganised), it didn't arrive... So not to be a martyr about it but I flew to New York to vote. I wasn't sure if my change of address had officially been registered (so) I went to my old polling place with my dad, where they let me vote by affidavit (what was totally allowed.)""
Dunham concluded her explanation by joking, ""Obviously I voted for Romney (Obama's Republican rival Mitt Romney). I hope everyone has a nice day.""