Who controls the Pennsylvania Senate?
Unofficial county-level returns from the Pennsylvania Department of State, read every 3 minutes. The numbers below are this tracker's estimates, not official results and not race calls. 25 even-numbered seats are on the ballot; 10 Democratic and 15 Republican seats hold over. 26 is a majority.
How the odds moved tonight
Probability of each outcome at each refresh, and the estimated number of Democratic seats (dotted, right axis). Flat lines before 8 pm mean no returns yet.
The 25 seats
Click a seat for county-by-county detail. Margin is the Democratic-side two-party margin: positive means the Democrat (or, in the 46th, the independent) leads. The range is the tracker's 90 percent interval. "% in" is counted votes as a share of the vote the tracker expects for the seat, so it can exceed 100 when turnout beats expectations.
| Seat | Candidates | Needle | Est. margin | % in | Status |
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Forecast column: the pre-election forecast's mean margin and rating. Seats marked "fixed" had no major-party opponent; their probability is held at the forecast's value and they are not estimated from returns.