The Republican National Committee (RNC), in a sharply-worded letter Tuesday, threatened to urge GOP candidates not to take part in future televised presidential debates unless the commission that organizes them adopts major reforms. In the letter, RNC chairwoman Ronna McDaniel accused the Commission on Presidential Debates (CPD) of partisanship and “significant errors” in its organization of the debates between then President Donald Trump and then-presidential candidate Joe Biden. The commission’s “repeated missteps and the partisan actions of its Board Members make clear that the organization no longer provides the fair and impartial forum for presidential debates which the law requires and the American people deserve,” McDaniel wrote. She criticized the CPD for waiting to host the first Biden-Trump debate until after the start of early voting in eight states, for switching to a virtual format over the Trump campaign’s objections, for its moderation selection process, and for a technical glitch with …