Title: Hellenic Parliament
Content:  In most cases an absolute majority (50% plus one) is sufficient for a vote to pass provided there are at least 75 MPs present in the Plenum, with the exception of certain bills where the Constitution requires for a higher threshold. These include treaties that transfer sovereignty to international bodies (at least 180 MPs) or changes to the electoral law so that it cannot be abused by the party in government (at least 200 MPs). Custom, namely the Dedilomeni Principle, dictates that there are always 75 MPs present in the Plenum and that the government has the majority of MPs inside the Plenum 
Title: 21st Alberta Legislature
Content: A party requires four seats to have official party status in the legislature. Parties with fewer than four seats are not entitled to party funding although their members will usually be permitted to sit together in the chamber. 
Title: 17th Alberta Legislature
Content: A party requires four seats to have official party status in the legislature. Parties with fewer than four seats are not entitled to party funding although their members will usually be permitted to sit together in the chamber. 
Title: 18th Alberta Legislature
Content: A party requires four seats to have official party status in the legislature. Parties with fewer than four seats are not entitled to party funding although their members will usually be permitted to sit together in the chamber. 
Title: Electoral system of Germany
Content:  represented in the Bundestag or the Landtag, or if the party represents a national minority. Otherwise the nominee must have at least 200 signatures from eligible voters in the constituency. It does not make a difference whether the suggestion is handed in by a party or not. Hence a candidate does not need to be supported by a party in a constituency if he has sufficient signatures. The county election nominee must also nominate a person of trust and a proxy who are allowed to release statements to the leader of the county election. A county election nomination can be recalled either by a joint statement from the two persons of trust or by a statement from the 
Title: 20th Alberta Legislature
Content: A party requires four seats to have official party status in the legislature. Parties with fewer than four seats are not entitled to party funding although their members will usually be permitted to sit together in the chamber. 
Title: House of Deputies
Content:  In many cases, a simple majority vote of all deputies is sufficient for a motion to pass. However, the lay or clerical representation of any three dioceses may require a "vote by orders". In some cases, the constitution and canons require a vote by orders. In a vote by orders, the votes of the clerical and lay orders are counted separately. Each diocese has a single vote in each order and a majority of dioceses must vote in favor in each order for a motion to pass.
Title: Quorum
Content:  In the National Council of Austria at least one-third of the representatives must be present, so that they may decide on a simple law (participation quorum of 33.3%). At least half of the members must participate if a constitutional law should pass the parliament (participation quorum of 50% based on the total number of members). Over and above that, constitutional laws require the consent of at least two-thirds of the members present (quorum agreement of 66.6% based on the number of voting present).
Title: Cádiz (Congress of Deputies constituency)
Content:  coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election are required to inform the relevant Electoral Commission within ten days of the election call—fifteen before 1985—whereas groupings of electors need to secure the signature of at least one percent of the electorate in the constituencies for which they seek election—one-thousandth of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list of candidates. Also since 2011, parties, federations or coalitions that have not obtained a mandate in either chamber of the Cortes at the preceding election are required to secure the signature of at least 0.1 percent of electors in the aforementioned constituencies.
Title: Seville (Parliament of Andalusia constituency)
Content:  the D'Hondt method may result in a higher effective threshold, depending on the district magnitude. The electoral law allows for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election are required to inform the relevant Electoral Commission within ten days of the election call—fifteen before 1985—whereas groupings of electors need to secure the signature of at least one percent of the electorate in the constituencies for which they seek election—one-thousandth of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list of candidates.

Question: what is the minimum number of parties required to enter into a deed?
Answer: two parties.