They can be either.
Democrat
Democrat
Joe McCarthy was Republican.
Vitter is a Republican. The other US Senator from Louisiana is Mary Landrieu a Democrat.
he was a democrat
No. She is a Democrat.
Debbie Stabenow is a Democrat from Michigan. She is the current junior US Senator for the state. She assumed office on January 3, 2001.
Collins is a republican.
Debbie Stabenow is a Democrat from Michigan. She is the current junior US Senator for the state. She assumed office on January 3, 2001.
Kay Hagan is a Democratic Senator from North Carolina.
The current US senators of Alaska are Mark Begich (Democrat) and Lisa Murkowski (Republican)
Most Recently, Senator Arlen Specter of Pennsylvania switched from Republican to Democrat.