How the race stacks up from here

Mitt Romney is on track to win the nomination when the primaries and caucuses are over on June 6.
 
Currently, Romney has 498 of the 1,144 delegates he needs to be
nominated. He now has 53 percent of the selected delegates, a clip he
has been maintaining since the start of the process. Rick Santorum has
25 percent, Newt Gingrich 15 and Ron Paul 7.
 
CURRENT DELEGATE COUNT
 
Romney          498 (53%)
Santorum        239 (25%)
Gingrich          139 (15%)
Paul                  69 (7%)
 
Romney is very likely to win the following winner-take-all primaries:
 
LIKELY ROMNEY WINNER-TAKE-ALL WINS
 
Puerto Rico            23
D.C.                       19
Maryland                37
Connecticut            28   
Delaware                17
Rhode Island           19
Oregon                   28
California                172
Montana                 25
New Jersey              50
Utah                       40
                              458
+current Romney    498
                              956
 
In addition, Romney will probably win these winner-take-all states:
 
Wisconsin                     42
Indiana                         46
West Virginia                 31
Nebraska                      35
South Dakota                28
                                 182
+                               956
                              1,138
 
Finally, Romney will probably do very well in the following proportional-representation states. Some, like New York and Illinois, award most of their delegates as a winner-take-all by congressional district    
 
               PR State                Delegates        Prob Romney
              
New York       95                         80
Illinois            69                         45
Maine             24                         20
New Mexico   23                          15
                                                160
               +                            1,138
                                             1,298
 
Needed to nominate:               1,144
 
So, even if Romney loses the winner-take-all primaries in North Carolina and Pennsylvania and gets clobbered in Texas, Arkansas, Kentucky, Louisiana and a few other conservative states, he should win the nomination by the time the primaries are over on June 6.