Apresident may persuade recalcitrant members of congress to vote for a particular bill by (a) having members who oppose the bill transferred to unpopular committees (b) denying campaign funds to members who oppose the bill (c) threatening to deny re-nomination to members who oppose the bill (d) regulating certain industries to protect the public interest (e) increasing the president's patronage powers

A President may persuade members of their own party to vote for a particular bill by B, denying campaign funds to members who oppose the bill.

The President is often thought to be the leader of whatever party they are a member of, giving them a tremendous amount of power when it comes to the raising of money as they are the top draw.

So, a President can use campaign funding as a stick and a carrot to get members of Congress to vote a particular way.

If the member in Congress is in the opposition, they are out of luck.  

the density would be a smaller number.

aliens arent real sorry bud