Campaign staffers are using internal polling data that has not been made public to make profitable trades on prediction markets such as Kalshi and Polymarket, according to a new report from NPR. Recently, there have been growing concerns regarding the use of non-public information by sharp prediction market traders more generally, although insider trading on these markets is not explicitly illegal in some cases and can be difficult to track on some platforms. One unnamed staffer told NPR that they and many other individuals placed bets on the outcome of the election in which they are involved before the public release of new polling data and ended up making money on their trades.…