The ability for individuals to directly vote for U.S. Senators was established by the 17th Amendment to the Constitution, which was ratified on April 8, 1913.

Before the 17th Amendment:

- State Legislatures' Role: Prior to the 17th Amendment, U.S. Senators were elected by state legislatures, not by the general public. This process was outlined in Article I, Section 3 of the U.S. Constitution.

After the 17th Amendment:

- Direct Election: The 17th Amendment changed the process so that Senators would be directly elected by the people of each state. This shift was made to make the Senate more responsive to the public and to reduce corruption and political manipulation that had occurred under the legislative election system.

Since 1913, U.S. citizens in each state have had the right to vote directly for their Senators.

The Bull Moose Party, officially known as the Progressive Party, was a political party in the United States formed by former President Theodore Roosevelt in 1912 after a split within the Republican Party. Here's what happened to the Bull Moose Party:

Formation and 1912 Election

- Origins: The Bull Moose Party was born from a rift between Theodore Roosevelt and the sitting President, William Howard Taft. Roosevelt, who had served as president from 1901 to 1909, was dissatisfied with Taft's conservative policies and decided to challenge him for the Republican nomination in 1912. When Taft won the nomination, Roosevelt and his supporters broke away to form the Progressive Party.

- The Bull Moose Party, affectionately nicknamed after Roosevelt's assertion that he felt 'as strong as a bull moose,' was a beacon of progressive reforms. It championed causes such as women's suffrage, social welfare programs, workers' rights, and the regulation of big businesses, demonstrating a strong commitment to change and reform.

- In the 1912 presidential election, Roosevelt ran as the Bull Moose candidate. His exceptional performance, securing 27% of the popular vote and finishing second behind Democrat Woodrow Wilson, was one of the best by a third-party candidate in U.S. history. However, it split the Republican vote, ultimately allowing Wilson to win the presidency, a testament to the Bull Moose Party's significant impact on U.S. history.

Decline and Dissolution

- Post-1912: After the 1912 election, the Bull Moose Party quickly lost momentum. Many of its supporters, who were originally Republicans, started to drift back to the Republican Party. The party needed the unifying figure of Roosevelt to maintain its relevance, who was the central force behind its creation.

1916 Election: In 1916, the Bull Moose Party attempted to mount another presidential campaign. However, Roosevelt declined to run and instead endorsed the Republican candidate, Charles Evans Hughes. Without Roosevelt's leadership, the party failed to gain significant support and effectively dissolved.

- Legacy: By the end of 1916, the Bull Moose Party had largely ceased to exist as an organised political force. However, its legacy lived on in the progressive policies it championed, many of which would later be adopted by the Democratic Party during the New Deal era under Franklin D. Roosevelt.