William Cocke was the first U.S. Senator from Tennessee. He was appointed to begin the term after Tennessee became a state and the Tennessee legislature failed to elect a Senator. William Cocke served as a U.S. Senator from August 2, 1796 until September 26, 1797. He resigned when Andrew Jackson was elected to finish Cocke's term.
He was a Tennessee Congressman, but was a Texas US Senator for 13 years.
Yes, Andrew Jackson had been a Senator prior to winning the Battle of New Orleans and prior to becoming President.
Jackson was a Senator for a very short time, but he represented what was then the new state of Tennessee.
tennessee
Sam Houston
Ron Ramsey
As of September 2021, the senator representing Obion County, Tennessee in the United States Senate is Marsha Blackburn. She has been serving as senator since 2019.
Congressman
Andrew Johnson served as a senator and representative from the state of Tennessee. He was later elected as the 17th President of the United States after the assassination of President Abraham Lincoln.
The answer is, he has not yet started and sadly it appears he will never be up to the job.
Al Gore became a US Senator in 1985 however the election was held in 1984.
He was both the first and third President of the Republic of Texas, a Governor of Tennessee and Texas, a US Senator and a hero of the Texas Revoolution.