Wisconsin Governor Scott Walker says he is running for the president of the United States in 2016, stating the American people deserve a leader who will fight for them.

The Republican politician made the announcement on Monday in a message posted on his Twitter account.

“I’m running for president because Americans deserve a leader who will fight and win for them,” said the message.

Walker will start his presidential bid at an announcement ceremony later on Monday in Waukesha, Wisconsin.

The 47-year-old has joined a crowded field of Republican presidential candidates that already includes more than a dozen politicians who are fiercely competing against each other to raise money for their election campaigns.

Last week, Rand Paul announced to accumulate $7 million in the first quarter of his 2016 White House bid.

Paul is considered a strong candidate, but his fundraising effort lags behind rivals like former Florida Governor Jeb Bush.

Bush raised $11.4 million in just over two weeks in June. And a group supporting Bush, Right to Rise USA, says it has amassed up to $103 million in the early months of his campaign.

The 2016 US presidential candidates are actively expressing their unconditional support for Israel in order to attract more campaign funding from the influential Zionist lobby in the US, according to journalist and political commentator Brandon Martinez in Toronto.

Martinez made the comments after Republican presidential candidate Senator Ted Cruz called on the United States to withdraw from the United Nations Human Rights Council (UNHRC) after the body voted to condemn Israel’s assault on Gaza last summer.

Cruz and his some Republican rivals have been making pro-Israel statements relentlessly to get funding for their presidential campaigns, which mostly comes from groups and business tycoons linked to the Israel lobby.

Cruz has raised $14.2 million, while groups aligned with him have amassed $37 million.

Political action committees (PACs) supporting Marco Rubio, another outspoken Israeli supporter, have raised over $31 million, according to the Washington Post.