Seized
Some reading:
The Seventeenth Amendment and the Death of Federalism by Ralph A. Rossum (2003, Claremont McKenna College).
Beyond the Shell and Husk of History: The History of the Seventeenth Amendment and Its Implications for Current Reform Proposals by Todd J. Zywicki (1997, Mississippi College School of Law)
Senators and special interests : a public choice analysis of the seventeenth amendment by Todd J. Zywicki (1994, George Mason University). (scroll down to see the text).
-PJ
Reasons:
1. The states were often slow to appoint replacement senators.
2. The claim that state legislators were in the pocket of the railroads. A claim that was probably somewhat true. It was also said then that governors were in the pocket of railroads. Again, probably somewhat true! If that statewide office picked by the voters can be in the railroads pocket how is picking a senator via the same electoral process an improvement?
The late 1800s to 1920s democracy as defined by the Progressive movement was all the rage. Many political intellectuals thought they were smarter than the Founding Fathers. You should read some Wilson's commentary on them and the Constitution. He was convinced it had outlived its usefulness time!