TR wins in 1912

[GMantis]

Although it had not been an issue during the 1914 campaign, war was looming in Europe.  On June 28, 1914, Gavrilo Princip, a Bosnian Serb student, shot and killed Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, in Sarajevo.  Princip was a member of Young Bosnia, a group whose aims included the unification of the South Slavs and independence from Austria-Hungary.  Following the assassination, President Roosevelt condemned the shooting, but urged his European counterparts not to rush into war.

Despite those comments, Roosevelt was privately preparing for war.  On July 1, Roosevelt met with the Chairman of the Senate Military Affairs, Senator George E. Chamberlain (D-OR), Senate Naval Affairs Chairman, Senator Benjamin Tillman (D-SC), and Senate Foreign Relations Chairman William J. Stone (D-MO), in order to see what his options were regarding war in Europe.

For the next several months, Roosevelt prepared for war.  He asked both Root and Stimson to create a detailed analysis of what would be required for a full scale war.  However, on May 7, 1915, the Lusitania was torpedoed by the German submarine, U-20, killing 1,198 of the 1,959 people aboard, including 128 Americans.

The next day, a livid President Roosevelt appears before Congress, and asks for a declaration of war against Germany and her allies, Austria-Hungary, the Ottoman Empire and Bulgaria.  He asks Congress to act quickly, before another attack can take place against America.  Congress responds, as the Senate quickly passes the declaration of war by a vote of 95-1, with only Progressive William Borah of Idaho voting against.  The House then passes the declaration by a vote of 433-2, with only Democrat Peter Tague of Massachusetts and Porter Dale of Vermont voting against.  On May 8, 1915, the United States officially enters World War I.

Bulgaria was not in the war in May 1915.

[GMantis]

Although it had not been an issue during the 1914 campaign, war was looming in Europe.  On June 28, 1914, Gavrilo Princip, a Bosnian Serb student, shot and killed Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, in Sarajevo.  Princip was a member of Young Bosnia, a group whose aims included the unification of the South Slavs and independence from Austria-Hungary.  Following the assassination, President Roosevelt condemned the shooting, but urged his European counterparts not to rush into war.

Despite those comments, Roosevelt was privately preparing for war.  On July 1, Roosevelt met with the Chairman of the Senate Military Affairs, Senator George E. Chamberlain (D-OR), Senate Naval Affairs Chairman, Senator Benjamin Tillman (D-SC), and Senate Foreign Relations Chairman William J. Stone (D-MO), in order to see what his options were regarding war in Europe.

For the next several months, Roosevelt prepared for war.  He asked both Root and Stimson to create a detailed analysis of what would be required for a full scale war.  However, on May 7, 1915, the Lusitania was torpedoed by the German submarine, U-20, killing 1,198 of the 1,959 people aboard, including 128 Americans.

The next day, a livid President Roosevelt appears before Congress, and asks for a declaration of war against Germany and her allies, Austria-Hungary, the Ottoman Empire and Bulgaria.  He asks Congress to act quickly, before another attack can take place against America.  Congress responds, as the Senate quickly passes the declaration of war by a vote of 95-1, with only Progressive William Borah of Idaho voting against.  The House then passes the declaration by a vote of 433-2, with only Democrat Peter Tague of Massachusetts and Porter Dale of Vermont voting against.  On May 8, 1915, the United States officially enters World War I.

Bulgaria was not in the war in May 1915.

In this TL, Bulgaria joins early, because Germany wants an extra ally against the impending entry of the US.

If US entry into the war was impending, Bulgaria wouldn't join. There was a significant oppositon to that even in OTL.
Incidentaly, the US didn't declare war on Bulgaria during WWI, but of course TR was quite a different person from Wilson.