Per the PA redistricting contest, here's my submission for PA Senate. Drawing the 50-seat Senate was much, much easier than the 203-seat House. Easier to keep townships together, easier to keep counties together, and less overall change.
There were really only two major changes: The Allegheny County-based, Dem-held 45th district was eliminated and moved to Berks County. The Dem-held 32nd loses some strong Dem areas and picks up some strong Republican areas and would probably flip parties.
This map maintains the 4 Philly black majority districts. The 2nd is a 38% Hispanic plurality district. Here's a statewide shot:
DRF: PA Sen map
Philadelphia
SD-01 Larry Farnese (D-Philadelphia)
South Philly white majority district. 76% Obama
SD-02 Christine Tartaglione (D-Philadelphia)
38% Hispanic, 29% White, 25% AA. 84% Obama.
SD-03 Shirley Kitchen (D-Philadelphia)
59% black majority district. 91% Obama.
SD-04 LeAnna Washington (D-Philadelphia)
51% black majority district. 85% Obama.
SD-05 Michael Stack III (D-Philadelphia)
White majority district in Philly goes from 58% Obama to 55% Obama and becomes competitive.
SD-06 Tommy Tomlinson (R-Bensalem)
Bucks County district is unchanged. 56% Obama.
SD-07 Vincent Hughes (D-Philadelphia)
55% black majority district in West Philly. 88% Obama.
SD-08 Anthony Williams (D-Philadelphia)
58% black majority district in Philly and Delaware County. Swaps out Landsdowns for Upper Darby. 85% Obama.
SD-12 Stewart Greenleaf (R-Willow Grove)
This Bucks/Montgomery County district becomes about a point more Dem. 55% Obama.
SD-17 Daylin Leach (D-Upper Merion Township)
The 17th just adds part of Whitpain Township for population equalization. 64% Obama.
SD-26 Ted Erickson (R-Newtown Square)
Picks up some territory at the periphery and swaps Upper Darby for Landsdowne. It becomes a point more Republican at 54% Obama.
SEPA
SD-09 Dominic Pileggi (R-Chester)
Majority Leader Pileggi's Delaware/Chester County district remains about the same. 58% Obama.
SD-10 Charlie McIlhinney (R-Doylestown)
SD-10 loses a couple precincts at the northern fringes in Bucks County. Stays at 53% Obama.
SD-11 Judy Schwank (D-Fleetwood)
Sen. Schwank lives barely outside this district in the newly-drawn 45th, but would most likely run here. This Berks County district stays at 59% Obama.
SD-13 Lloyd Smucker (R-Lancaster)
This Lancaster-based district picks up some leftovers in Chester County and loses some territory in York County. Stays at 50% Obama.
SD-15 Jeffrey Piccola (R-Susquehanna Township)
Dauphin County is split 3 ways in my map. The 15th is now Dem Harrisburg and Rep York County. Stays at 54% Obama.
SD-19 Andy Dinniman (D-West Chester)
This Chester County-based district swaps some territoy with the 44th and goes up to 58% Obama.
SD-24 Bob Mensch (R-Marlborough Township)
A filler district that takes in parts of 4 counties. It remains largely unchanged at 53% Obama.
SD-28 Mike Waugh (R-York)
This district lies entirely within York County. Stays at 45% Obama.
SD-36 Mike Brubaker (R-Ephrata)
This district is mostly in Lancaster, with a small sliver into Chester County. 40% Obama.
SD-44 John Rafferty, Jr (R-Collegeville)
The 44th retreats out of Berks County and is now within Montgomery and Chester. It becomes two points more Republican due to swapping precincts with the 19th. 53% Obama.
SD-48 Mike Folmer (R-Lebanon)
This is a bit of a leftovers district, but still looks better than the mess it was before. It is now only in 3 counties, Lebanon, Lancaster, Dauphin (as opposed to 5 before). 42% Obama.
Northern/Eastern PA
SD-14 John Yudichak (D-Pittston)
This Luzerne County-based district remains nearly unchanged. 57% Obama.
SD-16 Pat Browns (R-Allentown)
The Allentown-based district becomes more compact. It also becomes about a point more Dem, at 57% Obama.
SD-18 Lisa Boscola (D-Bethlehem)
The Bethlehem-to-Stroudsburg district remains pretty much the same, just losing some precincts due to population gain. 59% Obama.
SD-20 Lisa Baker (R-Dallas)
This NEPA district becomes more compact and stays at 47% Obama.
SD-22 John Blake (D-Blakely)
The Lackawanna County-based district remains mostly unchanged. 63% Obama.
SD-23 Eugene Yaw (R-Loyalsock Township)
This is a bit of a mishmash district. The base remains in Lycoming County, but the district shifts to the south. 39% Obama.
SD-25 Joe Scarnati (R-Brockway)
This district adds a lot of new territory and becomes a sprawling northern tier district. 39% Obama.
SD-27 John Gordner (R-Berwick)
Another central PA mishmash district that needs to be reconfigured to fit all the pieces properly. Overall, the district becomes a point more Dem at 43% Obama.
SD-29 Dave Argall (R-Rush Township)
Schuykill County-based district gets a bump up to 47% Obama.
SD-34 Jake Corman (R-Benner Township)
This district is based around State College and doesn’t change too much in my map. 47% Obama.
SD-35 John Wozniak (D-Johnstown)
This Johnstown-based district loses its territory in Somerset County and picks up most of the rest of Clearfield County. It shifts about one point to the right. 48% Obama.
SD-45 Open
This is a brand new district based in Berks County, but it stretches from Lebanon to Bethlehem. I would expect this to be an R pickup. 46% Obama.
Northern/Western PA
SD-21 Mary Jo White (R-Franklin)
This district stretches from Erie to Butler and is safely Republican at 41% Obama.
SD-41 Don White (R-Indiana)
This sprawling district picks up a lot of the leftovers after drawing Pittsburgh and SW PA. 39% Obama.
SD-49 Jane Earll (R-Erie)
This district is entirely within Erie County and doesn’t change all that much. 60% Obama.
SD-50 Bob Robbins (R-Greenville)
This district is all of Crawford and Mercer counties, and part of Lawrence. Not a whole lot of change here either. 46% Obama.
Pittsburgh
SD-37 John Pippy (R-Moon Township)
Southern Pittsburgh suburbs district is safely Republican. 45% Obama.
SD-38 Jim Ferlo (D-Pittsburgh)
This district gets pushed out of Pittsburgh and takes over a lot of the dismantled 45th district’s territory. It becomes a slightly competitive district, as it goes from 70% Obama all the way down to 57%.
SD-40 Jane Orie (R-McCandless)
The 40th loses some territory in Butler County and picks up more of the immediate Pittsburgh suburbs. It becomes 2 points more Democratic, but still should be a Republican seat. 42% Obama.
SD-42 Wayne Fontana (D-Pittsburgh)
This is a Safe Dem Pittsburgh district. 63% Obama.
SD-43 Jay Costa (D-Pittsburgh), Jim Brewster (D-McKeesport).
Sen. Brewster loses his district #45. He gets merged with Jay Costa’s Pittsburgh-based district. 76% Obama.
Southern/Western PA
SD-30 John Eichelberger (R-Duncanville)
This Altoona-based district is the safest R district in the state. 34% Obama.
SD-31 Pat Vance (R-Silver Spring Township)
But for Fairview Township in York County, this district is entirely within Cumberland County. 42% Obama.
SD-32 Rich Kasunic (D-Dunbar)
Sen. Kasunic loses the highly Democratic areas of western Fayette County and picks up some very Republican areas in Westmoreland. The district moves 6 points to the right and would be very difficult for him to retain. This is a likely R pickup. 40% Obama.
SD-33 Richard Alloway (R-Hamilton Township)
This Franklin and Adams County based district remains pretty much the same. 36% Obama.
SD-39 Kim Ward (R-Hempfield Township)
Westmoreland County-based district pushes into Allegheny County to compensate for the loss of SD-45. 41% Obama.
SD-46 Tim Solobay (R-Bentleyville)
The southwestern PA district loses R parts of Washington and Beaver counties and picks up heavy D areas of western Fayette County. As a result, it becomes 4 points more D. 53% Obama.
SD-47 Elder Vogel (R-New Sewickley Township)
This district gets pushed further south into Washington County. It becomes two points more Republican at 47% Obama.