Is looking more and more solid blue:

In the two months since Pennsylvania’s April 22 primary, Democrats have added more voters than Republicans in all but five of the state’s 67 counties and increased their statewide lead by 40,566 voters by the end of last week.

Republicans have lost nearly 1,500 registered voters since the primary.

The trend is especially pronounced in Philadelphia’s suburbs, where Democratic leads acquired in Montgomery and Bucks Counties in the primary season have already grown. In Montgomery County, Democratic Commissioner Joseph M. Hoeffel III reacted with some glee to numbers that showed his party had increased its advantage from 10,001 voters on April 22 to 13,784 as of yesterday.

That’s huge news in a state that already tilts blue.