Complex sentence: Conservative activists and writers blamed ORCA for depressing Republican turnout on election day, though political scientists have suggested that it probably did not have a decisive effect on the outcome, though it may have significantly affected turnout figures.
Split into simpler sentences: Conservative activists and writers blamed ORCA for depressing Republican turnout on election day. While political scientists have rebutted these claims, suggested that it probably did not have a decisive effect on the outcome, it may have negatively affected turnout figures.