Former President Donald Trump may be the presumptive 2024 Republican nominee, but his third bid for the White House is already at a significant financial disadvantage compared to President Joe Biden’s reelection operation. According to a recent Politico report, the ex-president is blocking off entire days on his calendar to call donors and ask them for help shoring up his campaign’s infrastructure with less than eight months to go before Election Day. Former Sen. Kelly Loeffler (R-Georgia), a top Trump fundraiser, admitted that trying to build up the ex-president’s war chest is an arduous task…