After winning over a series of vote switchers on Friday, the goal for Democrats on this Saturday is to lock up the votes on health care reform to ensure victory in the House on Sunday.  But there are still potholes that could cause trouble for Democratic leaders.

The main stumbling block is exactly the same one that Democratic leaders faced back in November - abortion funding restrictions.

Once again, Democrats need a few more votes.  And once again, a small bloc of pro-life Democrats could hold the key.

Last night, Speaker Nancy Pelosi and her top lieutenants were trying to forge a deal to bring Rep. Bart Stupak (D-MI) and some of his backers on board, but they were running into opposition from women Democrats who have vowed not to give in on any abortion restriction deal this time.

Stupak and his backers have scheduled a news conference for 11am on Saturday at the Capitol, so we are certain to get an update at that point.

Overall though, Friday was almost a perfect day for Democratic leaders, as they won over the votes of several lawmakers who had voted no back in November on health reform plans.

Among the converts, two Democrats from Florida, Rep. Allen Boyd from the Panhandle and Rep. Suzanne Kosmas from Central Florida and the Space Coast.

Early on Friday afternoon, Kosmas told reporters just off the House floor that she had not made up her mind, that she was still "evaluating" the final health deal.

Not long after that though, Kosmas told the Orlando Sentinel that she was jumping on the health care bandwagon.

One important vote that opponents kept was that of Rep. Jason Altmire (D-PA), who had also voted against the reform bill in November.

There were a few more liberal Democrats still threatening to vote no, like Rep. Peter DeFazio (D-OR), but I will believe those when I actually see them vote 'No'.

One would expect that President Obama will be on the phone and/or meeting in person with undecided Democrats as well.  This afternoon, he will cruise up to the Capitol for one more meeting with Democrats this afternoon.

We'll see what happens, as a Sunday showdown vote looms on health reform in the House.