The Green Papers, which does a great job of tallying the numbers, finds the current spread in the nationwide House vote to be as follows:

Democrats: 58,444,601 votes (52.80 percent)
Republicans: 49,165,306 votes (44.42 percent)

These numbers comport with the exit polling, which showed the Democrats taking the day 54.12 percent to 43.88 percent. In terms of percentage of the electorate, the split between the parties doesn't look too dissimilar from the spread in 2006:

Democrats: 42,082,311 votes (52.0 percent)
Republicans: 35,674,808 votes (44.1 percent)

This is the first time in nearly two decades that either party received 52 percent or more of the vote in two straight elections. The Democrats' 52.8 percent share of the nationwide House vote is also a greater share than the Republicans have earned in any House election since 1946. Not coincidentally, the Democrats now have a larger majority than the Republicans had during their 12 years in power in the 1990s and 2000s -- and a greater majority than the Republicans had in 1952 or even 1946. In fact, you now have to go back all the way to 1928 to find a larger Republican majority in the House of Representatives. So Tuesday wasn't a bad night for the Democrats.