truffle compile error

[kaitojas]

I got a compile error when i compile election.sol, it show's like this

/home/js/election/contracts/Election.sol:24:5: Warning: This declaration shadows an existing declaration.
function Election () public {
^ (Relevant source part starts here and spans across multiple lines).
/home/js/election/contracts/Election.sol:3:1: The shadowed declaration is here:
contract Election {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Migrations.sol:11:3: Warning: This declaration shadows an existing declaration.
function Migrations() {
^ (Relevant source part starts here and spans across multiple lines).
/home/js/election/contracts/Migrations.sol:3:1: The shadowed declaration is here:
contract Migrations {
^ (Relevant source part starts here and spans across multiple lines).

/home/js/election/contracts/Election.sol:24:5: SyntaxError: Functions are not allowed to have the same name as the contract. If you intend this to be a constructor, use "constructor(...) { ... }" to define it.
function Election () public {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Migrations.sol:11:3: SyntaxError: Functions are not allowed to have the same name as the contract. If you intend this to be a constructor, use "constructor(...) { ... }" to define it.
function Migrations() {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Migrations.sol:11:3: SyntaxError: No visibility specified. Did you intend to add "public"?
function Migrations() {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Migrations.sol:15:3: SyntaxError: No visibility specified. Did you intend to add "public"?
function setCompleted(uint completed) restricted {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Migrations.sol:19:3: SyntaxError: No visibility specified. Did you intend to add "public"?
function upgrade(address new_address) restricted {
^ (Relevant source part starts here and spans across multiple lines).
,/home/js/election/contracts/Election.sol:29:28: TypeError: Data location must be "storage" or "memory" for parameter in function, but none was given.
function addCandidate (string _name) private {
^----------^

[Maniddarky]

put function addCandidate (string memory _name) private {