Pennsylvania Democrats have registered in record numbers for the state's April 22 primary following a late surge to Monday's deadline. The last minute rush put the total number over 4 million, a 4 percent bump over both 2006 and 2004 at this point in the cycle. GOP registration declined slightly over the last 2 cycles.

Over 120,000 Democrats have registered for the first time since Jan. 1. An additional 86,000 switched their party affiliation from either Independent or Republican.

At first look, a break down by county shows the bump spans accross the state to areas of strength for both Sens. Barack ObamaBarack ObamaDem senator: Trump thinks LGBT stands for 'Let’s Go Back in Time' Inauguration singer to Trump: Meet with me and my transgender sister NY attorney general: Transgender students to be protected despite withdrawal of Obama regulations MORE (D-Ill.) and Hillary ClintonHillary Rodham ClintonPerez and Ellison agree on DNC playing neutral role in primary John Legend not ruling out talking politics at Oscars Clinton taunts GOP lawmakers for dodging town halls MORE (D-N.Y.).

Recent polls show Clinton's lead over Obama anywhere from 12 to 26 points.