What impact would a continuing SEPTA strike have on Election Day? Here are some points to consider.

1. The main concern is that Philadelphia voters who rely on SEPTA and now have to find other ways to work and school might not be able to vote because they'll leave home before polls open at 7 a.m. and not get home until after polls close at 8 p.m. The number of potentially affected voters is not known.

2. When the city SEPTA workers walked out in 2009 and were still on the picket lines on Election Day — it was Nov. 3 — the turnout of 120,000 voters was actually was slightly up for an off-year election, according to PlanPhilly. The top races on the ballot that day were for State Supreme Court, District Attorney and City Controller.

3. Most voters live within walking distance of their polling place. It's not known exactly how many voters would rely on SEPTA to get to their precinct but that number is thought to be small.

4. Voter turnout in the last presidential election in 2012 was 1,099,418 – 58.8 percent of the total number of registered voters. It was higher in 2008, President Obama's first election, when 1,126,760 voters cast ballots, 63.6 percent of the registered total.

5. Donald Trump would be the main beneficiary of a lower turnout in Philadelphia, where registered Democrats outnumber registered Republicans 7 to 1. Hillary Clinton's campaign is banking on support in the city and surrounding counties to carry Pennsylvania, where Clinton has a 4 percent edge in the latest polls.