Republican strategist Scott Jennings said that the Democratic Party was in a “nosedive” after the Supreme Court ruled in favor of former President Donald Trump’s immunity appeal Monday. The Supreme Court ruled Monday that Trump is “entitled to immunity” for “official acts” in a case stemming from an indictment secured by special counsel Jack Smith over his efforts to contest the 2020 election in a 6-3 decision authored by Chief Justice John Roberts. Jennings said that since a Manhattan jury of seven men and five women convicted Trump on 34 felony counts of falsification of business records May…