United States Senator Kyrsten Sinema (I-AZ), who initially entered politics as a Democrat before switching parties in 2022, announced in a video posted to social media Tuesday that she would not seek re-election in 2024. Last month, the Daily Beast’s Sam Brodey and Roger Sollenberger reported Sinema’s “bizarre spending suggests that she isn’t serious about running for a second term.” Brodey and Sollenberger wrote, “Now, as Sinema reportedly considers whether to run for another term in 2024, it’s hard to overstate the degree to which she has become a caricature of the type of politician she onc…