David McCormick's Senate Bid in Pennsylvania Sparks Controversy Over Residency

David McCormick, a former hedge fund executive who lost a Senate primary race last year, has announced his candidacy for the Republican Senate bid in Pennsylvania. McCormick aims to unseat Democratic Senator Bob Casey, who plans to seek a fourth term. Republicans are attempting to avoid intraparty battles and replicate the success of Democrats in avoiding primary fights that weaken their nominees. McCormick appears to have cleared the primary field of major challengers, potentially avoiding costly infighting. The strategy to unify the party and sidestep fault lines between Trumpian loyalists and traditional conservatives is being tested in Pennsylvania.