Toomey's approval ratings have also dipped.
In some cases, their challengers are doing better, according to just released reports.
The Nevada Democrat criticized New Hampshire's role in selecting the next president.
The incumbent Democrat has yet to attact a big-name challenger for his Colorado Senate seat.
Reid said New Hampshire and Iowa voters shouldn't be picking the next president.
A group of Senate Democratic candidates embroiled in primary challenges against establishment picks are using Tuesday night’s debate as a way to introduce themselves to a large Democratic audience.
House candidates in Illinois,...
Cincinnati City Councilman P.G. Sittenfeld is pressuring former Ohio Gov. Ted Strickland to agree to primary debates.
Democrats acknowledge they're going to be outspent in the Senate campaign.
The ad will air during Tuesday's presidential primary debate.
The GOP leads in Pennsylvania but trails in Florida Senate races, the new poll shows.