News of Davis' donations came less that 24 hours after Rep. Emanuel Cleaver (D-MO) told Roll Call that there "are some people [who] believe he's getting ready to switch parties."
Davis shot back at Cleaver's criticism in an email to Roll Call.
"I have heard many Democrats criticize Republicans for imposing litmus tests on their membership," Davis wrote. "I certainly hope that Congressman Cleaver and others are not suggesting that if a Democrat does not hold a certain position that he is no longer fit to be a Democrat."
Davis has declined to name any specific instances in which he claims to have witnessed attempted voter fraud, writing that he "choose not to play that game."