Recently , it 's been Democrats who have been in attention-getting , bruising primaries . A platoon of Republicans are mulling Senate bids in Ohio , Florida , Maryland , California , Pennsylvania and Illinois . Of the nine Senate seats rated as toss-up or competitive in 2016 , seven are held by Democrats .
Recently , it 's been Republicans who have been in attention-getting , bruising primaries . A platoon of Democrats are mulling Senate bids in Ohio , Florida , Maryland , California , Pennsylvania and Illinois . Of the nine Senate seats rated as toss-up or competitive in 2016 , seven are held by Republicans .