WASHINGTON - President Barack Obama has arrived on Capitol Hill as he tries to round up Democratic votes for his health care overhaul.

The House plans to vote Saturday evening. Republicans are voting against the bill, but Democrats who control Congress hope their party will supply enough votes to pass it.

Obama was accompanied by top political adviser David Axelrod as he walked into the Cannon House Office Building around 11:30 a.m (1630 GMT) for meetings with Democratic lawmakers.