Louisiana lawyer Ravi Sangisetty is the first Democrat to make official preparations to wage a 2010 campaign for the state’s open 3rd District seat.

Sangisetty has filed a statement of candidacy and organized a campaign committee with the Federal Election Commission to initiate a bid in Louisiana’s 3rd, a conservative-leaning district that three-term Democrat Charlie Melancon is giving up to run for the Senate.

E-mails sent to Sangisetti’s campaign and to his law office were not returned. His campaign Web site is currently under construction.