The competition among Republican presidential candidates for the support of the political and fundraising network of Charles and David Koch will heat up this weekend.
The Palmetto Freedom Forum, hosted by Senator Jim DeMint, a Republican, is likely to be a preview of what could be a raucous and important fight among the candidates for the support of evangelical voters and the active Tea Party movement in South Carolina.
On Web sites and in the online social media, a parallel battlefield has emerged as candidates vie for the support of voters, more than a quarter of whom, polls say, have not made a choice as the July 1 election nears.
With the Illinois primary election Tuesday, much attention has focused on the GOP presidential candidates' jockeying for the support of the state's prized delegates.
The affordability and availability of child care has become a prominent issue in the 2016 presidential elections, as Democratic presidential candidates compete for the support of the party's progressive primary voters.
"Believe it or not, I am absolutely, totally convinced that I will have the votes tomorrow," said Councilman Peter F. Vallone of Queens, a candidate for the post supported by Council members from Queens, the Bronx and Staten Island.
The company admitted it should never have invited academics to suggest candidates for the £1,500 support and a graduate job afterwards at its Southampton office.
The chaotic campaign, in which candidates are competing for the support of the 168 members on the committee, could draw even more candidates in the final month.
Mr. Rato, the European candidate for the post, has the support of the United States and earlier won the endorsement of Latin American countries who are the largest I.M.F.
Harris and other Democratic presidential candidates are vying for the support of the nation's two major teachers unions.
