Political pollsters and advocacy groups are making it clear just how fatal the GOP's inaction on immigration reform could be for the party in upcoming elections.

"Neither of the two parties, while the Democrats do considerably better than the Republicans, have a majority support in Congress from Latinos on handling immigration reform," Matt Barreto, co-founder of polling firm Latino Decisions, said during a press call on Tuesday.

Barreto continued, "I think that would be reflecting the reality in that there has not been a breakthrough and both parties have considerable work to do. While the Democratic Party has positioned itself as pushing more on immigration reform, they have not been able to convince Republicans to move forward so both parties continue to suffer."

According to a recent poll by Latino Decisions, which surveyed 800 Latino registered voters, 71 percent of Latino voters said that it is "very or extremely" important to pass comprehensive immigration reform in 2014. Only two percent of voters polled believed that passing immigration reform this year was "not at all important."

The poll also noted that Latino voters largely place the blame of inaction on Republicans. While neither party earned majority approval from voters based on immigration reform, House Republicans got a staggering 68 percent disapproval rating from voters. House Democrats, on the other hand, received a 43 percent disapproval rating.

The poll found that 74 percent of Latino voters will be less favorable towards Republicans in Congress if House Speaker John Boehner does not allow a vote on immigration reform. However, the poll also revealed that 53 percent of Latinos will be more favorable of the GOP if a vote is allowed.

Republicans can also foster more approval from Latino voters if they express favorable attitudes towards immigration reform, the poll found. When read a positive comment by Rep. Jeff Denham, R-Calif., 66 percent of voters polled said they were more favorable to the GOP. However, when they were read a negative comment by Rep. Paul Broun, R-Ga., 63 percent of voters reported being less favorable to the GOP.

Barreto added that the polls findings demonstrate that "a sizable chunk of the Latino electorate is willing to give the Republican Party a chance if they demonstrate leadership and say the right thing and do the right thing on immigration reform."

Latino Decision's latest poll also found that 49 percent of Latino voters stated they would blame the Republican Party if immigration reform is not passed in 2014. Meanwhile, 16 percent would blame Democrats and 15 percent would blame both parties.

Barreto warned, "The Mitt Romney numbers of 2012 are not necessarily the low point for Republicans. If they continue to position themselves as blocking immigration reform, it can get worse, they can drive more Latino voters away."

America's Voice founder and executive director Frank Sharry said on Tuesday that the poll suggests "that the future of the Republican Party is at stake, and that what John Boehner and other House Republicans decide to do or not do on immigration reform in the coming weeks will be a pretty key factor in determining that future."

Sharry continued, "If Republicans fail to get it done [vote on immigration reform], it just seems to me that the GOP brand will go from tarnished to finished with Latino voters. And yet if they do get it done, they can regain their competitiveness as one of the voting groups that will determine the future of American politics."

The immigration reform advocate, who has blasted politicians on both sides of the aisle for lack of action on the issue, said he believes it will be "now or never" for the GOP to make a move. Sharry added that the poll suggested that if the GOP does not act, "they're going to 2016 as the anti-immigrant party that blocked the best chance at immigration reform in a generation."
House Speaker John Boehner, R-Ohio, has stated in that he is pro reform but has refused to put the Senate's June 2013 bipartisan bill up for a vote.

During a May 23 press conference, Boehner was asked by Fusion and Univision anchor Jorge Ramos why he was blocking a vote, to which he responded with criticisms for the bill and claims that Republicans could not trust President Obama to enforce the law, Bloomberg Businessweek reported.

While allowing a vote could put his speakership at risk, the latest poll by Latino Decisions shows that not allowing a vote could prove even riskier.

Calls and emails to Speaker Boehner's office for comment were not returned.

Sharry also warned that the party could not hide behind pro-immigration reform advocates such as former Florida Gov. Jeb Bush, who would not be able to overcome the anti-immigration party brand.