Very bad news for Democrats in latest Gallup poll, which they’re headlining as “unprecedented.”

Republicans lead by 51% to 41% among registered voters in Gallup weekly tracking of 2010 congressional voting preferences. The 10-percentage-point lead is the GOP’s largest so far this year and is its largest in Gallup’s history of tracking the midterm generic ballot for Congress.

On “enthusiasm” the Republican Tea Party has a 25-point lead on Independents and Democrats who are at 28% and 25% respectively.

This is not a daily poll, it’s a weekly tracking poll, which should send a chill down the Democrats spine, wherever they’ve hidden it.