Mitt Romney won all three primaries on Tuesday and is closing in on the number of delegates he needs to officially secure the Republican Party’s presidential nomination.

108 delegates were available Tuesday, and Romney is likely to win all 27 up for grabs in Indiana, the vast majority of the 52 available in North Carolina and most or all of the 28 in West Virginia.

Before Tuesday’s primary, Romney had secured 856 of the 1,144 delegates he needs to win the nomination, according to the Post’s primary tracker, meaning he will still be about 200 delegates shy of the number he needs even with his sweep tonight.

Romney was taking about two-thirds of the vote in all three states, according to totals available at the time of this posting.

Only Rep. Ron Paul (R-Texas) remains in the GOP race to challenge Romney, but Rick Santorum and Newt Gingrich remained on the ballot in all three states after dropping out.

Romney won’t be able to officially secure the nomination until at least May 29, when Texas holds its primary.